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JEE Questions for Physics Current Electricity Ii Quiz 5 - MCQExams.com
JEE
Physics
Current Electricity Ii
Quiz 5
In each of the follwing questions, match column I and column II and select the correct match out of the four given choices.
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a – p, b – q, c – r, d – s
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a – q, b – p, c – r, d – s
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a – q, b – p, c – s, d – r
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a – p, b – q, c – s, d – r
In each of the follwing questions, match column I and column II and select the correct match out of the four given choices
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a – p, b – q, c – r, d – s
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a – s, b – r, c – q, d – p
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a – r, b – q, c – p, d – s
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a – q, b – r, c – s, d – p
Match the following two columns.
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a – q, b – s, c – r, d – p
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a – q, b – r, c – s, d – s
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a – p, b – q, c – s, d – r
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a – p, b – r, c – q, d – s
Match the physical quantities given in column I with their dimensional formulae given in column II –I stands for the dimesion of current.
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a – s, b – p, c – q, d – r
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a – p, b – s, c – r, d – q
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a – p, b – s, c – r, d – q
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a – r, b – p, c – q, d – s
The length of a potentiometer wire is 600cm and it carries a current of 40m A for cell of emf 2V and internal resistance 10Ω, the null point is found to be at 500cm on connecting a voltmeter across the cell, the balancing length is decreased by 10 cm
The voltmeter reading will be.
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1.96 V
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1.8 V
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1.64 V
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0.96 V
There are two electric bulbs of 40 W and 100 W. Which one will be brighter when first connected in series and then in parallel
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40 W in series and 100 W in parallel
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100 W in series and 40 W in parallel
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40 W both in series and parallel will be uniform
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100 W both in series and parallel will be uniform
The length of a potentiometer wire is 600cm and it carries a current of 40m A for cell of emf 2V and internal resistance 10Ω, the null point is found to be at 500cm on connecting a voltmeter across the cell, the balancing length is decreased by 10 cm
The resistance of the voltmeter is
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500 Ω
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290 Ω
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490 Ω
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20 Ω
Assertion
: There is no current in the metals in the absence of electric field.
Reason
: Motion of free electrons is random.
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Both assertion and reason are true and the reason is correct ercplanation of the assertion
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Both assertion and reason are true, but reason is not correct explanation of the assertion
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Assertion is true, but the reason is false
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Both, assertion and reason are false
Assertion
: the drift velocity of electrons in a metallic wire will decrease, if the tempreature of the wire is increased
Reason
: On increasing temperature, conductivity of metallic wire decreases
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Both assertion and reason are true and the reason is correct explanation of the assertion
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Both assertion and reason are true, but reason is not correct explanation of the assertion
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Assertion is true, but the reason is false
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Both, assertion and reason are false
Assertion
: A potentiometer of longer length is used for acaurate measurement.
Reason
: The potential gradient for a potentiometer of longer length with a given source of e.m.f become small.
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Both assertion and reason are true and the reason is correct explanation of the assertion
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Both assertion and reason are true, but reason is not correct explanation of the assertion
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Assertion is true, but the reason is false
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Both, assertion and reason are false
Assertion
: The 200w bulbs glow with more brightness than 100w bulbs.
Reason
: A 100w bulb has more resistance than a 200w bulb.
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Both assertion and reason are true and the reason is correct explanation of the assertion
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Both assertion and reason are true, but reason is not correct explanation of the assertion
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Assertion is true, but the reason is false
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Both, assertion and reason are false
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Both assertion and reason are true and the reason is correct explanation of the assertion
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Both assertion and reason are true, but reason is not correct explanation of the assertion
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Assertion is true, but the reason is false
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Both, assertion and reason are false
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Both assertion and reason are true and the reason is correct explanation of the assertion
0%
Both assertion and reason are true, but reason is not correct explanation of the assertion
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Assertion is true, but the reason is false
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Both, assertion and reason are false
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Both assertion and reason are true and the reason is correct explanation of the assertion
0%
Both assertion and reason are true, but reason is not correct explanation of the assertion
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Assertion is true, but the reason is false
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Both, assertion and reason are false
Assertion
: when temperature of a conductor is increased its resistance increses.
Reason
: Free electorns collide collide frequently
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Both assertion and reason are true and the reason is correct explanation of the assertion
0%
Both assertion and reason are true, but reason is not correct explanation of the assertion
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Assertion is true, but the reason is false
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Both, assertion and reason are false
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Both assertion and reason are true and the reason is correct explanation of the assertion.
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Both assertion and reason are true, but reason is not correct explanation of the assertion
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Assertion is true, but the reason is false
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Both, assertion and reason are false
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Both assertion and reason are true and the reason is correct explanation of the assertion.
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Both assertion and reason are true, but reason is not correct explanation of the assertion.
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Assertion is true, but the reason is false.
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Both, assertion and reason are false.
Assertion
: Current I is flowing through a cylindrical wire of non-uniform cross-section as shown section of wire near A will be more heated compared to the section near B.
Reason
: Current density near A is more
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Both assertion and reason are true and the reason is correct explanation of the assertion.
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Both assertion and reason are true, but reason is not correct explanation of the assertion.
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Assertion is true, but the reason is false.
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Both, assertion and reason are false.
An electrical circuit is shown in fig the values of resistance and the directions of the currents are shown A voltmeter of resistance 400Ω is connected across the 400Ω resistor the battery has negligible internal resistance.
The residing of the voltmeter is.
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0%
2)
0%
0%
An electrical circuit is shown in fig the values of resistasnces and the directions of the currents are shown A voltmeter of resistance 400Ω is connected across the 400Ω resistor the battery has negligible internal resistance.
The value of current i
2
is
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0%
2)
0%
0%
An electrical circuit is shown in fig the values of resistasnces and the directions of the currents are shown A voltmeter of resistance 400Ω is connected across the 400Ω resistor the battery has negligible internal resistance.
The value of current i
1
is
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0%
2)
0%
0%
Explanation
Solve by kirchhof's second law
Figure shows four cell E, F, G and H of emfs 2V, 1V, 3V and 1V and internal resistances 2Ω, 1Ω, 3Ω and 1Ω respectively
The Potential difference between the terminals of cell is
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Equal to 1V
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More than 2V
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Between 1.5V and 2V
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Between 1v and 1.5V
Figure shows four cell E, F, G and H of emfs 2V, 1V, 3V and 1V and internal resistances 2Ω, 1Ω, 3Ω and 1Ω respectively
The Potential difference between the terminals of celi G is.
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Equal to 1V
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More than 2V
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Between 1.5V and 2V
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Between 1V and 1.5V
Figure shows four cell E, F, G and H of emfs 2V, 1V, 3V and 1V and internal resistances 2Ω, 1Ω, 3Ω and 1Ω respectively
The potential difference between points B and D is.
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0%
0%
2)
0%
0%
Figure shows four cell E, F, G and H of emfs 2V, 1V, 3V and 1V and internal resistances 2Ω, 1Ω, 3Ω and 1Ω respectively
The current flowing in the 2Ω resistor is
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0%
2)
0%
0%
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1.5 A
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1.2 A
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0.9 A
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0.6 A
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0.3 A
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0.25 A
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0.2 A
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Zero
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0%
2)
0%
0%
In the circuit show in figure, match the following two colums:-
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a – p, b –q, c – r, d –s
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a – s, b –q, c – r, d –p
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a – s, b –r, c – s, d –r
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a – q, b –r, c – s, d –s
In the circuit shown in figure, after closing the switch S, match the follwing two columns.
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a – p, b – q, c – r, d – s
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a – p, b – r, c – s, d – q
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a – p, b – r, c – s, d – q
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a – q, b – p, c – q, d – p
Current i is flowing through a wire of nonuniform cross section as shown match the follwing two columns.
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a – p, b – p, c – p, d – p
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a – q, b – r, c – s, d – p
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a – q, b – q, c – p, d – p
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a – p, b – q, c – r, d – s
For the circuit shown in figure, match the two columns.
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a – p, b – s, c – q, d – r
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a – s, b – r, c – q, d – p
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a – q, b – s, c – q, d – s
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a – s, b – q, c – p, d – r
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0%
2)
0%
0%
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4 V
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2 V
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12 V
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6 V
What is three equivalent resistance areoss the terminals A and B?
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0%
2)
0%
0%
Eight identical resistances r each are connected as shown find equivalent resistance between A and D
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0%
2)
0%
0%
Eight identical resisitances r each are connected along edges of a pyramid having square base ABCD as shown calculate equivalent resistance between A and O.
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0%
2)
0%
0%
Fourteen identical resistors each of resistance r are connected as shown calculate equivalent resistance between A and B.
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1.2 r
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2 r
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2.1 r
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r
In the circuit shown in fig the potential difference across 3Ω is
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2 V
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4 V
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8 V
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16 V
A wire 50cm long and 1 mm
2
in cross-section carries a curent of 4A when connected to a 2V battery. The resistivity of the wire is:
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4 Ω
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15 Ω
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12 Ω
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22 Ω
What is the p.d between the terminals A and B?
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12 V
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24 V
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36 V
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48 V
What is the equivalent resistance across the teminals A and B?
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0%
2)
0%
0%
A wire in a circular shape has 10 Ω resistance. The resistance per one meter is 1 Ω The resultant between A & B is equal to 2.4 Ω, then the length of the chord AB will be equal to
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2.4
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4
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4.8
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6
Calculate net resistance between A and B
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r
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2)
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0%
2r
Calculate net resistance beween A and B
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2r
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3r
0%
0%
r
Calculate net resistance beween A and B
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3Ω
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2)
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5 Ω
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Calculate net resistance beween A and B
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6 Ω
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10 Ω
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9 Ω
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4 Ω
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3V
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6V
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9V
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12V
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1A
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2A
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3A
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4A
In Fig, the galvanometer shows no deflection. what is the resistance X?
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7Ω
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14 Ω
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21 Ω
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28 Ω
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