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Electromagnetic Induction Test - 72
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Electromagnetic Induction Test - 72
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  • Question 1/10
    4 / -1
    As shown in the figure a metal rod makes contact and completes the circuit. The circuit is perpendicular to the magnetic field with B = 0.15 tesla. If the resistance is 3 Ω force needed to move the rod as indicated with a constant speed of 2 m/sec is

    Solutions

  • Question 2/10
    4 / -1
    Two identical coaxial circular loops carry current i each circulating in the clockwise direction. If the loops are approaching each other, then
  • Question 3/10
    4 / -1
    In the following figure, the magnet is moved towards the coil with a speed v and induced e.m.f.e. If magnet and coil recede away from one another each moving with speed v, the induced e.m.f. in the coil will be

    Solutions

  • Question 4/10
    4 / -1
    A current carrying solenoid is approaching a conducting loop as shown in the figure. The direction of induced current as observed by an observer on the other side of the loop will be

    Solutions

  • Question 5/10
    4 / -1
    A conducting wire frame is placed in a magnetic field which is directed into the paper. The magnetic field is increasing at a constant rate. The directions of induced current in wires AB and CD are

    Solutions

  • Question 6/10
    4 / -1
    A square metallic wire loop of side 0.1 m and resistance of 1 Ω is moved with a constant velocity in a magneticfield of 2 wb/m2 as shown in figure. The magnetic field is perpendicular to the plane of the loop, loop is connected to a network of resistances. What should be the velocity of loop, so as to have a steady current of lmA in loop

    Solutions

  • Question 7/10
    4 / -1
    A conductor ABOCD moves along its bisector with a velocity of 1 m/s through a perpendicular magnetic field of 1 wb/m2, as shown in fig. If all the four sides are of lm length each, then the induced e.m.f. betweenpoints A and D is

    Solutions

  • Question 8/10
    4 / -1
    A conducting rod PQ of length L = 1.0 m is moving with a uniform speed v = 2 m/s in a uniform magnetic field B = 4.0 T directed into the paper. A capacitor of capacity C =10µF is connected as shown in figure. Then

    Solutions

  • Question 9/10
    4 / -1
    The resistance in the following circuit is increased at a particular instant. At this instant, the value of resistance is 10 Ω. The current in the circuit will be

    Solutions

  • Question 10/10
    4 / -1
    Shown in the figure is a circular loop of radius r and resistance R. A variable magnetic field of induction B = B0 e–t is established inside to coil. If the key (K) isclosed, the electrical power developed right after closing the switch is equal to

    Solutions

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