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Electromagnetic Induction Test - 71
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Electromagnetic Induction Test - 71
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  • Question 1/10
    4 / -1
    An electron moves along the line AB, which lies in the same plane as a circular loop of conducting wires as shown in the diagram. What will be the direction of current induced if any, in the loop?

  • Question 2/10
    4 / -1
    An e.m.f. of 15 volt is applied in a circuit containing 5 henry inductance and 10 ohm resistance. The ratio of the currents at time t = ∞ and at t =1 second is
    Solutions

  • Question 3/10
    4 / -1
    A thin semicircular conducting ring of radius R is falling with its plane vertical in a horizontal induction B. At the position MNQ, the speed of the ring is V and the potential difference developed across the ring is

    Solutions

  • Question 4/10
    4 / -1
    At a place the value of horizontal component of the earth\'s magnetic field H is 3 × 10–5 weber/m2. Ametallic rod AB of length 2 m placed in east-west direction, having the end A towards east, falls vertically downward with a constant velocity of 50 m/s. Which end of the rod becomes positively charged and what is the value of induced potential difference between the two ends
    Solutions

  • Question 5/10
    4 / -1
    Consider the situation shown in the figure. The wire AB is sliding on the fixed rails with a constant velocity. If the wire AB is replaced by semicircular wire, the magnitude of the induced current will

  • Question 6/10
    4 / -1
    A circular loop of radius R carrying current I lies in x-y plane with its centre at origin. The total magnetic flux through x-y plane is
  • Question 7/10
    4 / -1
    Two coils have a mutual inductance 0.005 H. The current changes in the first coil according to equation I = I0 sin ωt, where I0 = 10 A and ω = 100 π radian/sec. The maximum value of e.m.f. in the second coil is
    Solutions

  • Question 8/10
    4 / -1
    A small square loop of wire of side 1 is placed inside a large square loop of wire of side L (L >1). The loops are coplanar and their centres coincide. The mutual inductance of the system is proportional to
    Solutions

  • Question 9/10
    4 / -1
    A wire of length 1 m is moving at a speed of 2 ms–1 perpendicular to its length and in a homogeneous magnetic field of 0.5 T. The ends of the wire are joined to a circuit of resistance 6 Ω The rate at which work is being done to keep the wire moving at constant speed is
    Solutions

  • Question 10/10
    4 / -1
    An inductor of 2 henry and a resistance of 10 ohms are connected in series with a battery of 5 volts. The initialrate of change of current is
    Solutions

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