An RC circuit initially at rest has a step signal. The response V(t) a – McqOptions

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1.	An RC circuit initially at rest has a step signal. The response V(t) across C is V(t) = 1 - e-at, If now there is an initial voltage on C of 2 volts for the same step signal, V(t) is now
A.	1 + e -at
B.	1 + 2e -at
C.	2 - e -at
D.	3 - e -at
Answer» B. 1 + 2e -at

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