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Standard XII

Physics

Dependence of Resistance on Temperature

In a meter br...

Question

In a meter bridge the null point is obtained at the middle point of the wire. If in one gap the resistance is $10 Ω$ , then the value of resistance in the other gap is :-

10 Ω

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5 Ω

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\frac{1}{5} Ω

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500 Ω

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Solution

The correct option is A $10 Ω$
If the null point is determined at B, then $\frac{R}{S} = \frac{l}{100 - l}$
according to question, $l = 50 c m,$ so $\frac{R}{S} = \frac{50}{100 - 50} = 1$
or $R = S = 10 Ω$ (one resistance 10 $Ω$ given)

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In a meter bridge the null point is obtained at the middle point of the wire. If in one gap the resistance is 10Ω, then the value of resistance in the other gap is :-

The correct option is A 10ΩIf the null point is determined at B, then RS=l100−laccording to question, l=50cm, so RS=50100−50=1or R=S=10Ω (one resistance 10 Ω given)

In a meter bridge the null point is obtained at the middle point of the wire. If in one gap the resistance is $10 Ω$ , then the value of resistance in the other gap is :-

The correct option is A $10 Ω$
If the null point is determined at B, then $\frac{R}{S} = \frac{l}{100 - l}$
according to question, $l = 50 c m,$ so $\frac{R}{S} = \frac{50}{100 - 50} = 1$
or $R = S = 10 Ω$ (one resistance 10 $Ω$ given)