A network of uncharged capacitors and resistance is as shown. Current through the battery immediately after key k is closed and after a long time interval is
A
ER1,ER1+R3
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B
ER1+R3,ER1+R2R3R2+R3
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C
Zero,ER1
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D
ER1+R2R3R2+R3,ER1
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Solution
The correct option is AER1,ER1+R3 At t = 0; resistance offered by C1andC2 is 0 So it=0=ER1 and after long time, resistance offered by C1andC2is∞ So, it=∞=ER1+R3