Current Electricity

Related Questions

• In the given figure, potential difference between A and B is

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• The effective resistance of two resistors in parallel is $\frac{{12}}{7}\,\,\Omega $ . If one of the resistors is disconnected the resistance becomes $4 \Omega$. The resistance of the other resistor is

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• A piece of wire of resistance 4 ohms is bent through $180^\circ$ at its mid point and the two halves are twisted together, then the resistance is

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• If each resistance in the figure is of $9 \Omega$ then reading of ammeter is

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• The circuit shown here is used to compare the e.m.f. of two cells ${E_1}$ and ${E_2}({E_1} > {E_2})$. The null point is at C when the galvanometer is connected to ${E_1}$. When the galvanometer is connected to ${E_2}$, the null point will be

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