JEE Main & Advanced
Physics
Electro Magnetic Induction
Question Bank
Static EMI
question_answer
A coil of inductance 40 henry is connected in 0series with a resistance of 8 ohm and the combination is joined to the terminals of a 2 volt battery. The time constant of the circuit is [MP PET 2000]
A) 40 seconds
B) 20 seconds
C) 8 seconds
D) 5 seconds
Correct Answer:
D
Solution :
Time constant \[=\frac{L}{R}=\frac{40}{8}=5\,\,\sec .\]