Resistance

Ohm's law

Potential difference flowing through a conductor is directly proportional to the electric current when the temperature and other physical properties are kept constant

Ohmic conductor

Conductor which obeys Ohm's Law (Resistance constant)

Non-ohmic conductor

Conductor which does not obeys Ohm's Law (Resistance constant)

Factors that affect the resistance of a wire

Length of wire, cross-sectional area of wire, resistivity of the wire

Resistivity of a conductor

A measure of a conductor's ability to oppose the flow of electric current

Equation of Ohm's law

V = IR

Example of non-ohmic conductor

Filament bulb

Example ohmic conductor

Constantan wire

The resistivity of the wire and Length of the wire will affect

The resistance of a wire

Potential difference flowing through a conductor is directly proportional to the electric current when the temperature and other physical properties are kept constant. is the definition for

Ohm's Law

Physics

Question

Resistance

Resistance