8 Current Current: rate at which electrons move past a point in a wire. Measured by using amperes or amps (A)
9 VoltageVoltage: the difference in electrical potential between two points.Measured by using Volts (V)Voltage provides the force or push that moves electrons through a wire.An increase in voltage causes an increase in electron flow.
10 ResistanceResistance - opposition of a substance to a flow of electrons.Measured by using Ohms (Ω)The higher the resistance; the lower the current.
11 Factors Affecting Resistance MaterialThickness of a wireLength of a wireTemperature
12 Power EquationPower is a function of Voltage and current expressed by the equation.P = I x V
13 PowerPower: The rate at which energy is transferred or used in an electrical circuit.Measured by using Watts (W)