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Eddy currents are produced when...

Eddy currents are produced when

A

A metal block is kept in a changing magnetic field

B

A metal block is kept in a changing magnetic field

C

A coil is kept in a uniform magnetic field

D

Current is passed in a coil

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The correct Answer is:
A
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AAKASH INSTITUTE-ELECTROMAGNETIC INDUCTION-ASSIGNMENT(SECTION - A) (OBJECTIVE TYPE QUESTIONS)
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  2. A loop of Irregular shape made of flexible conducting wire carrying cl...

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  3. A copper rod of length l is rotated about one end perpendicular to the...

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  4. A coil of cross-sectional area A having n turns is placed in uniform m...

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  5. A flat coil of 500 turns each of area 50 cm^(2) rotates in a uniform m...

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  6. Eddy currents are produced when

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  7. A motor starter

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  8. A simple electric motor has an armature resistance of 1Omega and runs ...

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  9. Which of the following is possible application of an RC circuit?

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  10. The current passing through a choke coil of self inductance 5 H is dec...

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  11. When the number of turns in a coil is doubled without any change in th...

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  12. A coil of resistance 10Omega and an inductance 5H is connected to a 10...

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  13. Obtain the expression for the magnetic energy stored in a solenoid in ...

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  14. An inductor is connected to a direct voltage source through a switch. ...

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  15. A long solenoid has self inductance. L. If its length is doubled keepi...

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  16. If L and R denote inductance and resistance respectively, then the dim...

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  17. A solenoid of 2000 turns is wound over a length of 0.3 m. The area aof...

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  18. With the decrease of current in the primary coil from 2 amperes to zer...

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  19. Two coaxial coils are very close to each other and their mutual induct...

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  20. The coefficients of self induction of two inductance coil are 0.01 H a...

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