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Earn 100

The magnetic energy density of a solenoid is independent of magnetic permeability in vacuum.
(a)True
(b)False

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Important Questions on Electromagnetic Induction
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A coil is connected to low voltage bulb and placed near another coil as shown in Fig. 6.74. Give reasons to explain the following observation:
The bulb '' lights.

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What is the magnetic energy stored in the solenoid? How does this magnetic energy compare with the electrostatic energy stored in a capacitor?

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A coil carries a current of , the energy stored in joule is

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A conducting wire of mass and neglibile resistance slides smoothly on two parallel conducting wires as shown in Figure. The closed circuit has a resistance due to and are perfect conductors. There is a magnetic field .
For (b), show that the decrease in kinetic energy of equals the heat lost in .

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