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Non-Ideal Battery

In the follow...

Question

In the following circuit diagram, the galvanometer reading is zero. If the internal resistance of cells is negligible then the value of x will be

10 Ω

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100 Ω

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200 Ω

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500 Ω

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Solution

The correct option is B $100 Ω$
Applying Kirchhoff's law for outer loop, $12 - 2 = 500 I \Rightarrow I = \frac{10}{500} = 1 / 50 A$
As galvanometer reading is zero so the potential across resistance X is $I X = 2$
or, $(1 / 50) X = 2 \Rightarrow X = 100 Ω$

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Similar questions

R_{1} = 400 Ω, R_{3} = 100 Ω

R_{4} = 500 Ω

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V_{A} = 12 V, R_{1} = 500 Ω

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The reading of a galvanometer connected in the circuit is zero. If the internal resistance of a battery is zero then find the value of $X$ .

A

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V_{A} = 12 V, R_{1} = 500 Ω

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(G)

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