Current Electricity

Related Questions

• Constantan wire is used in making standard resistances because its

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• Potential gradient is defined as

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• 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

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• Two bulbs are in parallel and they together consume 48 W from a battery of 6 V. The resistance of each bulb is

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• In a potentiometer experiment two cells of e.m.f.E1 and E2 are used in series and in conjunction and the balancing length is found to be 58 cm of the wire. If the polarity of E2 is reversed, then the balancing length becomes 29 cm. The ratio $\frac{{{E_1}}}{{{E_2}}}$ of the e.m.f. of the two cells is

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