In order for a circuit to respond quickly,its time constant should be short.In a circuit involving resistance and capacitance,which of the following choices would result in the shortest time constant?
A)R = 75 Ω,C = 75 μF
B)R = 200 Ω,C = 200 μF
C)R = 300 Ω,C = 75 μF
D)R = 100 Ω,C = 30 μF

Question

Quizplus · Accepted Answer

The time constant is given by the product of resistance and capacitance (RC). Therefore, in order to have the shortest time constant, we need to choose the smallest values for R and C. Option D has the smallest values of R and C, which gives the smallest time constant and hence the fastest response time.

In Order for a Circuit to Respond Quickly,its Time Constant