Physics reviewer

is the amount of charge passing through any point in a conductor per unit time.

is flow of positive charges from the positive terminal to the negative terminal of a source of charge.

is a flow of electrons from negative terminal to the positive terminal of the battery.

is the opposition of a material to the flow of electric current. SI unit is Ω

explains the relationship between the resistance, voltage and current.

Note that potential difference is also ___

is directly proportional to the current

is inversely proportional to the current

As the ___ increases, the resistance decreases. Thus, a thick wire has lesser resistance than a thin wire.

The resistance is directly proportional to its ___. A longer wire has a greater resistance than a shorter wire.