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प्रश्न
What does the positive and negative sign of potential convey?
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उत्तर
The positive sign of potential conveys that work has to be done on the positive test charge against the repulsive force due to the positive charge in bringing it from infinity. The negative sign of potential conveys that work is done on the negative test charge by the attractive force.
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संबंधित प्रश्न
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State the relation between potential difference, work done and charge moved.
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Explain why potential difference is always less than the e.m.f. of a cell?
Five resistors of different resistances are connected together as shown in the figure. A 12 V battery is connected to the arrangement.

Calculate:
(i) the total resistance in the circuit
(ii) the total current flowing in the circuit.
A 10 m long wire of a particular material is of resistance 5Ω What will be the resistance if the wire is stretched to double its length?
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