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QNEET-2018-Ph-879: NEET 2018 Physics - Class 12 NEET-2018-Ph-879 Solution: The magnetic potential energy stored in a certain inductor is…
The magnetic potential energy stored in a certain inductor is 25 mJ when the current in the inductor is 60 mA. This inductor is of inductance 0.138 H 138.88 H 1.389 H 13.89 H
Multiple Choice Options
- A 0.138 H
- B 138.88 H
- C 1.389 H
- D 13.89 H
Step-by-Step Verified Solution
From question energy stored in inductor,
U = 25 _ 10 �3 J
Current, I = 60 mA
Also, energy stored in inductor, U = 1 2 L I 2
25 _ 10 �3 = 1 2 _ L _ ( 60 _ 10 _ 3 ) 2
_ L = 25 _ 2 _ 10 6 _ 10 _ 3 3600 = 13.89 H