plz ans it sir.

Asked by abuzerzain72 | 27th May, 2020, 08:28: PM

Expert Answer:

The resistance in the middle has no contribution during the charging process of capacitor C as it does not change the potential difference across RC combination nor the current flowing through it. 
Thus, time constant 
t1 = RC ...(1) 
Discharging of the C takes place R+R = 2R (resistors are in series) 
t2 = Req C = 2RC ...(2) 
From (1) and (2), 
t subscript 1 over t subscript 2 equals fraction numerator R C over denominator 2 R C end fraction space equals space 1 half space

a n d space

t subscript 1 space plus thin space t subscript 2 space equals space R C thin space plus 2 R C space equals space 3 R C 
Thus, both options (a) and (b) are correct. 

Answered by Shiwani Sawant | 28th May, 2020, 04:51: PM