Networks Analysis and Synthesis - Engineering

Q1:

An R-L series circuit is excited by a voltage v(t). The circuit was initially relaxed. Which of the following sources of v(t) would cause maximum current at t = 0+?

A unit step

B unit impulse

C unit ramp

D unit step plus unit ramp

ANS:B - unit impulse

An impulse has very high rate of rise. Therefore, it causes maximum current.