Q. In the figure magnetic energy stored in the coil is
A) Zero
B) Infinite
C) $25\ joules$
D) None of the above
Explanation
(c) $i = \frac{V}{R} = \frac{10}{2} = 5A$
$U = \frac{1}{2}Li^{2} = \frac{1}{2} \times 2 \times 25 = 25\ J$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.