JEE Questions for Physics Electromagnetic Induction Quiz 15 - MCQExams.com


Physics-Electromagnetic Induction-69639.png
  • 7
  • 8
  • 6
  • 9
According to phenomenon of mutual inductance,
  • the mutual inductance does not dependent on geometry of the two coils involved
  • the mutual inductance depends on the intrinsic magnetic property, like relative permeability of the material
  • the mutual inductance is independent of the magnetic property of the material
  • ratio of magnetic flux produced by the coil 1 at the place of the coil 2 and the current in the coil 2 will be different from that of the ratio defined by interchanging the coils
There are two solenoids of same length and inductance L but their diameters differ to the extent that one can just fit into the other. They are connected in three different ways in series. (They are connected in series but separated by large distance, (they are connected in series with one inside the other and senses of the turns coinciding, (both are connected in series with one inside the other with senses of the turns opposite as depicted in Figs.1, 2 and 3 respectively. The total inductance of the solenoids in each of the case 1, 2 and 3 are respectively
Physics-Electromagnetic Induction-69641.png
  • 0, 4 L0 , 2L0
  • 4 L0 , 2L0 , 0
  • 2L0 , 0, 4 L0
  • 2L0 , 4 L0 , 0
Two coils of self inductance 2 mH & 8 mH are placed so close together that the effective flux in one coil is completely half with the other.The mutual inductance between these coils is.......
  • 4 mH
  • 6 mH
  • 2 mH
  • 16 mH
In the figure the magnetic energy stored in the coil is
Physics-Electromagnetic Induction-69644.png
  • zero
  • infinite
  • 25 J
  • 16 J
A thin semicircular conducting ring of radius R is falling in a magnetic field B. Which is in limited area as shown in figure. At the position MNQ,the speed of ring is v and the potential difference developed across the ring is
Physics-Electromagnetic Induction-69646.png
  • zero
  • 2)
    Physics-Electromagnetic Induction-69647.png

  • Physics-Electromagnetic Induction-69648.png

  • Physics-Electromagnetic Induction-69649.png
A wire of length 2m is moving at a speed 2ms–1 keep its length perpendicular to uniform magnetic field of 0.5 T. The resistance of circuit joined with this wire is 6Ω. The rate at which work is being done to keep the wire moving at constant speed is ..........

  • Physics-Electromagnetic Induction-69651.png
  • 2)
    Physics-Electromagnetic Induction-69652.png

  • Physics-Electromagnetic Induction-69653.png

  • Physics-Electromagnetic Induction-69654.png

Physics-Electromagnetic Induction-69656.png

  • Physics-Electromagnetic Induction-69657.png
  • 2)
    Physics-Electromagnetic Induction-69658.png

  • Physics-Electromagnetic Induction-69659.png

  • Physics-Electromagnetic Induction-69660.png
A resistor and a capacitor are connected in series with an ac source. If the potential drop across the capacitor is 5 V and that across resistor is 12 V, the applied voltage is,
  • 13 V
  • 17 V
  • 5 V
  • 12 V
An alternating current of frequency 'f ' is flowing in a circuit containing a resistance R and a choke L in series.The impedance of this circuit is,

  • Physics-Electromagnetic Induction-69680.png
  • 2)
    Physics-Electromagnetic Induction-69681.png

  • Physics-Electromagnetic Induction-69682.png

  • Physics-Electromagnetic Induction-69683.png

Physics-Electromagnetic Induction-69684.png
  • 1H
  • 2H
  • 3H
  • 0.5H
An LCR series circuit with R = 100Ω is connected to a 200 V, 50 Hz a.c source when only the capacitance is removed the current lies the voltage by 60o when only the inductance is removed, the current leads the voltage by 60o. The current in the circuit is,
  • 2A
  • 1A

  • Physics-Electromagnetic Induction-69686.png

  • Physics-Electromagnetic Induction-69687.png
In the adjoining figure the impedance of the circuit will be
Physics-Electromagnetic Induction-69689.png
  • 120Ω
  • 50Ω
  • 60Ω
  • 90Ω
0:0:1


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