Current Electricity

Related Questions

• A potentiometer consists of a wire of length 4 m and resistance 10 $\Omega$. It is connected to cell of emf 2 V. The potential difference per unit length of the wire will be

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• Two wires of same material have length $L$ and $2L$ and cross–sectional areas $4A$ and $A$ respectively. The ratio of their specific resistance would be

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• Current of 4.8 amperes is flowing through a conductor. The number of electrons per second will be

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• Two non-ideal identical batteries are connected in parallel. Consider the following statements <br>(i) The equivalent e.m.f. is smaller than either of the two e.m.f.s <br>(ii) The equivalent internal resistance is smaller than either of the two internal resistances

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• A potentiometer consists of a wire of length 4 m and resistance $10\,\Omega $. It is connected to a cell of e.m.f. 2 V. The potential difference per unit length of the wire will be

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