Physics - Currents, Circuits, & Electric fields

a measure of the electrical potential energy transferred to or from an electron when it is moving between two points in a circuit

• heating effect → energy transferred to a resistor as internal energy

• magnetic effect

• chemical effect

the potential difference across a metallic conductor is directly proportional to the current in the conductor, providing that the physical conditions of the conductor don't change

• proportional to its length

• inversely proportional to its cross-sectional area

resistance varies with temperature; temp increases, resistance falls

resistance varies with light intesnsity; light intensity increases, resistance falls

the terminal potential difference when no current is supplied