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Question
A 100 mH coil carries a current of 4 ampere. The energy stored in joules is ____________.
Options
1
0.1
0.08
0.8
MCQ
Fill in the Blanks
Solution
A 100 mH coil carries a current of 4 ampere. The energy stored in joules is 0.8.
Explanation:
`"Energy stored E" = 1/2"LI"^2`
`= 1/2 xx 100 xx 10^-3 xx 16`
`= 0.8 "J"`
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Energy Stored in a Magnetic Field
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