A coil of 40 henry inductance is connected in series 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
A. 20 seconds
B. 5 seconds
C. 1/5 seconds
D. 40 seconds
Answer:B
A coil of 40 henry inductance is connected in series 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
A. 20 seconds B. 5 seconds C. 1/5 seconds D. 40 seconds