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In the circuit the galvanometer G shows ...


In the circuit the galvanometer G shows zero deflection. If the betteries A and B have negligible internal resistance, the value of the resistor R will be:

A

`100Omega`

B

`200Omega`

C

`500Omega`

D

`1000Omega`

Text Solution

Verified by Experts

The correct Answer is:
B
`i=(E)/(r+R)`
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