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In the figure magnetic energy stored in ...

In the figure magnetic energy stored in the coil is

A

zero

B

infinite

C

25 J

D

None of the above

Text Solution

Verified by Experts

The correct Answer is:
C
Current in the circuit, `i=V//R=10//2=5A`
`therefore` Magnetic energy stored in the coil,
`U=(1)/(2)Li^(2)=(1)/(2)xx2xx(5)^(2)=25J`
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