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Questions  >>  JEEMAIN and NEET  >>  Physics  >>  Class12  >>  Current Electricity
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Q)

In a potentiometer experiment the balancing with a cell is at length 240 cm. On shunting the cell with a resistance of $ 2 \Omega$ the balancing length becomes 120 cm. The internal resistance of the cell is

$\begin {array} {1 1} (A)\;1\Omega & \quad (B)\;0.5\Omega \\ (C)\;4\Omega & \quad (D)\;2\Omega \end {array}$

 

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