EL3 Resistance in Electric Circuits

Resistor

An electrical device that resists the flow of electrical current

Resistance

A material's opposition to the flow of electric current.

graphical representation

way of conveying information without words

voltage

The potential difference measured in volts. The amount of work to be done to move a charge from one point to another along an electric circuit.

current

A flow of electric charge.

Ohm's Law

the current in a circuit equals the voltage difference divided by the resistance

Ohm

unit of electrical resistance

Power

the rate at which work is done

electric motor

A device that changes electrical energy into mechanical energy

Watt

unit of power

Voltage Formula

current x resistance

Resistance Formula

Voltage/current

Current Formula

voltage/resistance

Electrical Power Formula

voltage x current