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Recent questions tagged meter-bridge-potentiometer-instrumentation

In a meter bridge experiment null point is obtained at 20 cm from one end of the wire when resistance $X$ is balanced against another resistance Y. If $ X < Y$, then where will be the new position of the null point from the same end, if one decides to balance a resistance of 4$X$ against $Y$?

asked Feb 16, 2014 by thanvigandhi_1

1 answer

In a Wheatstone's bridge their resistances P, Q and R connected in the three arms and the fourth arm is formed by the two resistances $S_1\: and \: S_2$ connected in parallel. The condition for bridge to be balanced will be

asked Feb 15, 2014 by thanvigandhi_1

1 answer

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

asked Feb 15, 2014 by thanvigandhi_1

1 answer

An ammeter and a voltmeter are joined in series to a battery. Their readings are $A$ and $V$ respectively. If a resistance is now joined in parallel with the voltmeter

asked Feb 10, 2014 by thanvigandhi_1

1 answer

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