Question 427: Current Electricity

Question

In the circuit, the galvanometer $G$ shows zero deflection. If the batteries $A$ and $B$ have negligible internal resistance, the value of the resistor $R$ will be -
![](https://imagex.cdn.examgoal.net/wdPkzYotWpbtMGcHB/vDsOgRTEDG5phP6WowOHC9gMTihmf/ykLGuMgYjw4wmep6Znswfy/image.png)

Accepted Answer

$iR = 2 = 12 - 500i$
$	herefore$ $i = {1 \over {50}}$
$	herefore$ ${1 \over {50}} 	imes R = 2$
$R = 100\Omega $
![](https://imagex.cdn.examgoal.net/XjzEMMCS6x6iv3Jcy/bI98Kq4znRaSpoCcgwoE0p8ec7JNK/IYA5tEr0vnFIRO5cBFW692/image.svg)

Answer

$100\Omega $

Answer

$200\Omega $

Answer

$1000\Omega $

Answer

$500\Omega $

Current Electricity

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

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