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A charged capacitor is allowed to disch...

A charged capacitor is allowed to discharge through a resistor by closing the key at the instant `t=0`. At the instant `t=(ln 4)mus`, the reading of the ammeter falls half the initial value. The resistance of the ammeter is equal to

A

`0.5 Omega`

B

`1 Omega`

C

`2 Omega`

D

`4 Omega`

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