JEE Questions for Physics Current Electricity Ii Quiz 5 - MCQExams.com

In each of the follwing questions, match column I and column II and select the correct match out of the four given choices.
Physics-Current Electricity II-66661.png
  • a – p, b – q, c – r, d – s
  • a – q, b – p, c – r, d – s
  • a – q, b – p, c – s, d – r
  • 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
Physics-Current Electricity II-66662.png
  • a – p, b – q, c – r, d – s
  • a – s, b – r, c – q, d – p
  • a – r, b – q, c – p, d – s
  • a – q, b – r, c – s, d – p
Match the following two columns.
Physics-Current Electricity II-66663.png
  • a – q, b – s, c – r, d – p
  • a – q, b – r, c – s, d – s
  • a – p, b – q, c – s, d – r
  • 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.
Physics-Current Electricity II-66664.png
  • a – s, b – p, c – q, d – r
  • a – p, b – s, c – r, d – q
  • a – p, b – s, c – r, d – q
  • 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.
  • 1.96 V
  • 1.8 V
  • 1.64 V
  • 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
  • 40 W in series and 100 W in parallel
  • 100 W in series and 40 W in parallel
  • 40 W both in series and parallel will be uniform
  • 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
  • 500 Ω
  • 290 Ω
  • 490 Ω
  • 20 Ω
Assertion: There is no current in the metals in the absence of electric field.
Reason: Motion of free electrons is random.
  • Both assertion and reason are true and the reason is correct ercplanation of the assertion
  • Both assertion and reason are true, but reason is not correct explanation of the assertion
  • Assertion is true, but the reason is false
  • 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
  • Both assertion and reason are true and the reason is correct explanation of the assertion
  • Both assertion and reason are true, but reason is not correct explanation of the assertion
  • Assertion is true, but the reason is false
  • 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.
  • Both assertion and reason are true and the reason is correct explanation of the assertion
  • Both assertion and reason are true, but reason is not correct explanation of the assertion
  • Assertion is true, but the reason is false
  • 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.
  • Both assertion and reason are true and the reason is correct explanation of the assertion
  • Both assertion and reason are true, but reason is not correct explanation of the assertion
  • Assertion is true, but the reason is false
  • Both, assertion and reason are false

Physics-Current Electricity II-66665.png
  • Both assertion and reason are true and the reason is correct explanation of the assertion
  • Both assertion and reason are true, but reason is not correct explanation of the assertion
  • Assertion is true, but the reason is false
  • Both, assertion and reason are false

Physics-Current Electricity II-66666.png
  • Both assertion and reason are true and the reason is correct explanation of the assertion
  • Both assertion and reason are true, but reason is not correct explanation of the assertion
  • Assertion is true, but the reason is false
  • Both, assertion and reason are false

Physics-Current Electricity II-66667.png
  • Both assertion and reason are true and the reason is correct explanation of the assertion
  • Both assertion and reason are true, but reason is not correct explanation of the assertion
  • Assertion is true, but the reason is false
  • Both, assertion and reason are false
Assertion: when temperature of a conductor is increased its resistance increses.
Reason: Free electorns collide collide frequently
  • Both assertion and reason are true and the reason is correct explanation of the assertion
  • Both assertion and reason are true, but reason is not correct explanation of the assertion
  • Assertion is true, but the reason is false
  • Both, assertion and reason are false

Physics-Current Electricity II-66668.png
  • Both assertion and reason are true and the reason is correct explanation of the assertion.
  • Both assertion and reason are true, but reason is not correct explanation of the assertion
  • Assertion is true, but the reason is false
  • Both, assertion and reason are false

Physics-Current Electricity II-66669.png
  • Both assertion and reason are true and the reason is correct explanation of the assertion.
  • Both assertion and reason are true, but reason is not correct explanation of the assertion.
  • Assertion is true, but the reason is false.
  • 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
Physics-Current Electricity II-66670.png
  • Both assertion and reason are true and the reason is correct explanation of the assertion.
  • Both assertion and reason are true, but reason is not correct explanation of the assertion.
  • Assertion is true, but the reason is false.
  • 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.
Physics-Current Electricity II-66671.png

  • Physics-Current Electricity II-66672.png
  • 2)
    Physics-Current Electricity II-66673.png

  • Physics-Current Electricity II-66674.png

  • Physics-Current Electricity II-66675.png
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 i2 is
Physics-Current Electricity II-66677.png

  • Physics-Current Electricity II-66678.png
  • 2)
    Physics-Current Electricity II-66679.png

  • Physics-Current Electricity II-66680.png

  • Physics-Current Electricity II-66681.png
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 i1 is
Physics-Current Electricity II-66682.png

  • Physics-Current Electricity II-66683.png
  • 2)
    Physics-Current Electricity II-66684.png

  • Physics-Current Electricity II-66685.png

  • Physics-Current Electricity II-66686.png
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
Physics-Current Electricity II-66687.png
  • Equal to 1V
  • More than 2V
  • Between 1.5V and 2V
  • 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.
Physics-Current Electricity II-66689.png
  • Equal to 1V
  • More than 2V
  • Between 1.5V and 2V
  • 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.
Physics-Current Electricity II-66691.png

  • Physics-Current Electricity II-66692.png
  • 2)
    Physics-Current Electricity II-66693.png

  • Physics-Current Electricity II-66694.png

  • Physics-Current Electricity II-66695.png
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
Physics-Current Electricity II-66697.png

  • Physics-Current Electricity II-66698.png
  • 2)
    Physics-Current Electricity II-66699.png

  • Physics-Current Electricity II-66700.png

  • Physics-Current Electricity II-66701.png

Physics-Current Electricity II-66702.png
  • 1.5 A
  • 1.2 A
  • 0.9 A
  • 0.6 A

Physics-Current Electricity II-66704.png
  • 0.3 A
  • 0.25 A
  • 0.2 A
  • Zero

Physics-Current Electricity II-66706.png

  • Physics-Current Electricity II-66707.png
  • 2)
    Physics-Current Electricity II-66708.png

  • Physics-Current Electricity II-66709.png

  • Physics-Current Electricity II-66710.png
In the circuit show in figure, match the following two colums:-
Physics-Current Electricity II-66712.png
  • a – p, b –q, c – r, d –s
  • a – s, b –q, c – r, d –p
  • a – s, b –r, c – s, d –r
  • a – q, b –r, c – s, d –s
In the circuit shown in figure, after closing the switch S, match the follwing two columns.
Physics-Current Electricity II-66713.png
  • a – p, b – q, c – r, d – s
  • a – p, b – r, c – s, d – q
  • a – p, b – r, c – s, d – q
  • 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.
Physics-Current Electricity II-66714.png
  • a – p, b – p, c – p, d – p
  • a – q, b – r, c – s, d – p
  • a – q, b – q, c – p, d – p
  • a – p, b – q, c – r, d – s
For the circuit shown in figure, match the two columns.
Physics-Current Electricity II-66715.png
  • a – p, b – s, c – q, d – r
  • a – s, b – r, c – q, d – p
  • a – q, b – s, c – q, d – s
  • a – s, b – q, c – p, d – r

Physics-Current Electricity II-66716.png

  • Physics-Current Electricity II-66717.png
  • 2)
    Physics-Current Electricity II-66718.png

  • Physics-Current Electricity II-66719.png

  • Physics-Current Electricity II-66720.png

Physics-Current Electricity II-66721.png
  • 4 V
  • 2 V
  • 12 V
  • 6 V
What is three equivalent resistance areoss the terminals A and B?
Physics-Current Electricity II-66892.png

  • Physics-Current Electricity II-66893.png
  • 2)
    Physics-Current Electricity II-66894.png

  • Physics-Current Electricity II-66895.png

  • Physics-Current Electricity II-66896.png
Eight identical resistances r each are connected as shown find equivalent resistance between A and D
Physics-Current Electricity II-66723.png

  • Physics-Current Electricity II-66724.png
  • 2)
    Physics-Current Electricity II-66725.png

  • Physics-Current Electricity II-66726.png

  • Physics-Current Electricity II-66727.png
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.
Physics-Current Electricity II-66728.png

  • Physics-Current Electricity II-66729.png
  • 2)
    Physics-Current Electricity II-66730.png

  • Physics-Current Electricity II-66731.png

  • Physics-Current Electricity II-66732.png
Fourteen identical resistors each of resistance r are connected as shown calculate equivalent resistance between A and B.
Physics-Current Electricity II-66733.png
  • 1.2 r
  • 2 r
  • 2.1 r
  • r
In the circuit shown in fig the potential difference across 3Ω is
Physics-Current Electricity II-66734.png
  • 2 V
  • 4 V
  • 8 V
  • 16 V
A wire 50cm long and 1 mm2 in cross-section carries a curent of 4A when connected to a 2V battery. The resistivity of the wire is:
  • 4 Ω
  • 15 Ω
  • 12 Ω
  • 22 Ω
What is the p.d between the terminals A and B?
Physics-Current Electricity II-66736.png
  • 12 V
  • 24 V
  • 36 V
  • 48 V
What is the equivalent resistance across the teminals A and B?
Physics-Current Electricity II-66738.png

  • Physics-Current Electricity II-66739.png
  • 2)
    Physics-Current Electricity II-66740.png

  • Physics-Current Electricity II-66741.png

  • Physics-Current Electricity II-66742.png
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
Physics-Current Electricity II-66744.png
  • 2.4
  • 4
  • 4.8
  • 6
Calculate net resistance between A and B
Physics-Current Electricity II-66745.png
  • r
  • 2)
    Physics-Current Electricity II-66746.png

  • Physics-Current Electricity II-66747.png
  • 2r
Calculate net resistance beween A and B
Physics-Current Electricity II-66748.png
  • 2r
  • 3r

  • Physics-Current Electricity II-66749.png
  • r
Calculate net resistance beween A and B
Physics-Current Electricity II-66750.png
  • 3Ω
  • 2)
    Physics-Current Electricity II-66751.png
  • 5 Ω

  • Physics-Current Electricity II-66752.png
Calculate net resistance beween A and B
Physics-Current Electricity II-66753.png
  • 6 Ω
  • 10 Ω
  • 9 Ω
  • 4 Ω

Physics-Current Electricity II-66754.png
  • 3V
  • 6V
  • 9V
  • 12V

Physics-Current Electricity II-66756.png
  • 1A
  • 2A
  • 3A
  • 4A
In Fig, the galvanometer shows no deflection. what is the resistance X?
Physics-Current Electricity II-66758.png
  • 7Ω
  • 14 Ω
  • 21 Ω
  • 28 Ω
0:0:1


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