Electro Magnetic Induction And Alternating Currents Question 521
Question: A 50 mH coil carries a current of 2 ampere. The energy stored in joules is [MP PET/PMT 1988; MP PET 2005]
Options:
A) 1
B) 0.1
C) 0.05
D) 0.5
Show Answer
Answer:
Correct Answer: B
Solution:
Energy stored $ E=\frac{1}{2}Li^{2}=\frac{1}{2}\times 50\times {{10}^{-3}}\times 4=0.1\ J $
