Q3 of 41 Page 461

What is electric potential?

The electric potential, or voltage, is the difference in potential energy per unit charge between two locations in an electric field.


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1

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

 2

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

 4

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

 5

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?