Question

a. Define electric current and give it's unit. b. On what factors does the resistance of a conductor depend.​

Answer 1

Electric current is defined as the rate of flow of electric charge. Or, electric current is the amount of charge flowing through a particular area in unit time and is given by: I = Q / t. The S.I unit of electric current is Ampere (A).

b..-----The resistance of a conductor depends on thickness (cross sectional area of the wire), length and temperature. Resistivity is defined as the measure of the resisting power of a specified material to the flow of an electric current.