DPP Q12 EMI CHAMP

Question

In a L-R circuit the stored energy in the inductor coil is 5 Joule and rate of heat generation is 10 Watt at a charge flow rate of one coulomb per second. The time constant of circuit is :

Answer 1

Time constant 

\(t = \frac {2U}p\)

\(t = \frac{2\times 5}{10}\)

\(t = 1\)