Electricity- Yr 9

Current, voltage, resistance, potential difference

What is voltage?

The amount of energy each coulomb has, measured in volts

What is current?

The rate that charge flows around a circuit, measured in amps

What is resistance?

The slowing down of electrons/ current, measured in ohms

What is the equation that links charge, current and time?

Current= charge/ time

What is the equation that links voltage, charge and energy transferred?

Energy transferred= voltage X charge

What is the equation that links current, resistance and voltage?

Current= voltage/ resistance

What is the equation that links voltage, power and current?

Power= voltage X current

What is the equation that links current² , resistance and power

Power= current² X resistance