Question

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

Answer: (b).unit impulse

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Q. 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+?

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