Current i at time t = 4 sec will be

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Direction: Fig. shows the statement for given question.

Current i at time t = 4 sec will be—

1. 5 amp
2. 3 amp
3. – 3 amp
4. – 5 amp

Correct Option: B

At t = 4 sec
sources 30 u (t + 1) → exist and equals to 30 V 2 u (1 – t) → does not exist and equals to 0 amp Now, we will draw the equivalent circuit under this situation.

The current I =	30	= 3 amp.
	10