Q1 of 41 Page 461

Which kind of charge moves: positive charges (protons) or negative charges (electrons)?

Negative charge moves while protons can’t move because they are stuck in the nucleus so they can't move due to "strong nuclear force".


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2

Is electric current a scalar or vector quantity? Sate the smaller unit of current.

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What is electric potential?

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Calculate the work done in moving a charge of 5 coulombs from a point at 20 to another at 30 V.

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Electrons are responsible for conduction in a conductor. The speed of electron is not very high. Then, how the bulb is on immediately even through the switch and bulb are far away from each other in a household circuit?