WIRE LAMP/BULB CELL POWER PACK SWITCH RESISTOR AMMETER VOLTMETER FUSE This component This component converts electrical This component measures the voltage current to heat and completes the circuit. across an electrical then to light energy. component. This component measures the electric current that flows in a circuit This component brings electric current to the components in a circuit. This component controls the amount of electric current in a circuit by resisting its This component supplies electric current in a circuit. flow. This component This component supplies electric current in a circuit. protects components in a circuit by breaking the circuit when there is excessive current in it.