Question

If i(t)=4u(t) and e(t)=8u(t)-8u(t-2).What is the value of i2 ? (see attachment)

Answer 1

The answer choices are;
1. i2=u(t-2)
2. i2=-u(t)+u(t-2)
3. i2=3u(t)+u(t-2)
With explanation,if possible ,please.

Answer 2

Ans: 1. i2 = u(t-2)

Answer 3

The circuit has 2 meshes. The first mesh has a current source. It is not really required for solution. The second mesh has equation (according to KVL):
e(t) + 6*i2 + 2*(i2 - i1) = 0

Solve this and you get i2

Answer 4

Thank you very much.