JEE Main & Advanced
Physics
Electro Magnetic Induction
Question Bank
Static EMI
question_answer
A coil having an inductance of 0.5 H carries a current which is uniformly varying from zero to 10 ampere in 2 second. The e.m.f. (in volts) generated in the coil is [Kerala PET 2005]
A) 10
B) 5
C) 2.5
D) 1.25
Correct Answer:
C
Solution :
\[\left| e \right|=L\left| \frac{di}{dt} \right|=0.5\times \frac{10}{2}=2.5V\]