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A coil of resistance 10 W and an induc...

A coil of resistance 10 W and an inductance 5H is connected to a 100 volt battery . Then energy stored in the coil is :

A

31.25 J

B

62.5 J

C

125 J

D

250 J

Text Solution

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The correct Answer is:
B
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AAKASH INSTITUTE ENGLISH-ELECTROMAGNETIC INDUCTION-ASSIGNMENT(SECTION - A) (OBJECTIVE TYPE QUESTIONS)
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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 5 henry is decreasing at t...

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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 10 W and an inductance 5H is connected to a 10...

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

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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 ...

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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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