The circuit above contains two resistors of resistances Rx a

The circuit above contains two resistors of resistances R_x and R_2 and two capacitors C, and C_2. what is the time constant for this RC circuit. t = (r_1r_2/r_1 + r_2 (c_1 +c_2)

Solution

Here ,

for the resistance in parallel

1/Req = 1/R1 + 1/R2

Req = R1 * R2/(R1 + R2)

for the capacitors in parallel

Ceq = (C1 + C2)

Now, time constant = Req * Ceq

time constant = R1 * R2/(R1 + R2) * (C1 + C2)

hence , the correct option is 1. R1 * R2/(R1 + R2) * (C1 + C2)