Recent questions in Chapter9:Current Electricity

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Kirchhoff’s first law, i.e., ΣI = 0 at a junction, deals with the conservation of

asked Sep 25, 2022 in Chapter9:Current Electricity by Doubtly (98.9k points)

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When the balance point is obtained in the potentiometer, a current is drawn from

asked Sep 25, 2022 in Chapter9:Current Electricity by Doubtly (98.9k points)

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Define Potential Gradient.

asked Sep 25, 2022 in Chapter9:Current Electricity by Doubtly (98.9k points)

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Why should not the jockey be slided along the potentiometer wire?

asked Sep 25, 2022 in Chapter9:Current Electricity by Doubtly (98.9k points)

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Are Kirchhoff’s laws applicable for both AC and DC currents?

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On what factors does the potential gradient of the wire depend?

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Why is potentiometer preferred over a voltmeter for measuring emf?

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State the uses of a potentiometer.

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What are the disadvantages of a potentiometer?

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Distinguish between a potentiometer and a voltmeter.

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On what factors does the internal resistance of a cell depend?

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A voltmeter has a resistance 30 Ω. What will be its reading, when it is connected across a cell of emf

asked Sep 25, 2022 in Chapter9:Current Electricity by Doubtly (98.9k points)

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When two cells of emfs. E1 and E2 are connected in series so as to assist each other, their balancing length

asked Sep 25, 2022 in Chapter9:Current Electricity by Doubtly (98.9k points)

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The emf of a cell is balanced by a length of 120 cm of potentiometer wire. When the cell is shunted by a resistance

asked Sep 25, 2022 in Chapter9:Current Electricity by Doubtly (98.9k points)

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A potential drop per unit length along a wire is 5 × 10-3 V/m. If the emf of a cell balances against

asked Sep 25, 2022 in Chapter9:Current Electricity by Doubtly (98.9k points)

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The resistance of a potentiometer wire is 8 Ω and its length is 8 m. A resistance box and a 2 V

asked Sep 25, 2022 in Chapter9:Current Electricity by Doubtly (98.9k points)

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Find the equivalent resistance between the terminals F and B in the network shown in the figure below given

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A voltmeter has a resistance of 100 Ω. What will be its reading when it is connected across a cell of emf 2 V

asked Sep 25, 2022 in Chapter9:Current Electricity by Doubtly (98.9k points)

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