CapacitanceHard

Question

The time constant of the circuit shown is :

Options

A.RC/2
B.3RC/5
C.RC/3
D.RC/4

Solution


⇒           E = = ⇒ E = 2ε , req = = 0
Equivalent battery 
imax =               
for Qmax ⇒            
i = i2 = , i1 = i3 = i4 =
potential on C = potential on 2R resistance  = i3 × 2R = ε
charge on capacitor Qmax  = CV = Cε         τ =

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