Electro Magnetic Induction And Alternating Currents Question 182
Question: 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
Options:
A) 20 seconds
B) 5 seconds
C) 1/5 seconds
D) 40 seconds
Show Answer
Answer:
Correct Answer: B
Solution:
- Time constant is L/R Given, L=40H & $ R=8\Omega $
$ \therefore ,\tau =40/8=5,\sec $
