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Electromagnetic...

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  • Question 1
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    A circular loop of radius R, carrying current I, lies in xy-plane with its centre at origin. The total magnetic flux through xy-plane is

  • Question 2
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    A rectangular coil of copper wires is rotated in a magnetic field. The direction of the induced current changes once in each

  • Question 3
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    electromagnetic induction i.e currents can be induced in coils (Select the best)

  • Question 4
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    Coils C1 and C2 are stationary. C1 connected in series with one very small Diwali bulb while C2 is connected to a battery. If the connection is suddenly snapped

  • Question 5
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    In a car spark coil, an emf of 40000 volts is induced in its secondary winding when the current in its primary winding changes from 4 A to zero in 10 μs. The mutual inductance between the primary and the secondary windings of the spark coil is

  • Question 6
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    The dimensional equation for magnetic flux is

  • Question 7
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    What is the self-inductance of an air-core solenoid of length 3.14 m and cross-sectional area 10–3 m2 with 500 turns?

  • Question 8
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    According to Faraday's law

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