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With an unknown resistance X in the left gap and a resistance of 30 2 in the right gap of meter bridge the null point is obtained at 40 cm from the left end of the wire. Find (1) The unknown resistance and (ii) the shift in the position of the null point. (a) When the resistance in both the gaps are increased by 15 2 and (b) When the resistance in each gap is shunted by a resistance of 8 Q.

With an unknown resistance X in the left gap and a resistance of 30 2 in the right gap of meter bridge the null point is obtained at 40 cm from the left end of the wire. Find (1) The unknown resistance and (ii) the shift in the position of the null point. (a) When the resistance in both the gaps are increased by 15 2 and (b) When the resistance in each gap is shunted by a resistance of 8 Q.

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With an unknown resistance X in the left gap and a resistance of 30 in the right gap of meter bridge the null point is obtained at 40 cm from the left end of the wire. Find (1) The unknown resistance and (ii) the shift in the position of the null point. (a) When the resistance in both the gaps are increased by 15 and (b) When the resistance in each gap is shunted by a resistance of 8.
Transcribed Image Text:With an unknown resistance X in the left gap and a resistance of 30 in the right gap of meter bridge the null point is obtained at 40 cm from the left end of the wire. Find (1) The unknown resistance and (ii) the shift in the position of the null point. (a) When the resistance in both the gaps are increased by 15 and (b) When the resistance in each gap is shunted by a resistance of 8.
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