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In an a.c. circuit , phase difference be...

In an a.c. circuit , phase difference between current and potential is `pi//4`. The variation of `I` and `E` versus `t` is represented in the graph. If `E = E_0 cos (100 t)`, then the component of the circuit are

A

`R=1 M Omega` and `C=1 muF`

B

`R=1 Omega` and `C=100 pF`

C

`R=1 k Omega` and `C=10 muF`

D

`R=100 k Omega` and `C=10 muF`.

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