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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

Navjyot Kalra , 11 Years ago
Grade 10
anser 1 Answers
Simran Bhatia

Last Activity: 11 Years ago

(b)

Time constant is L/R

Given, L = 40H & R = 8W

.''. t = 40/8 = 5 sec.

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