This component is needed to push electrons around a complete circuit.

• battery
• cell
• bulb
• resistor

Enables the current in a circuit to be switched on/off.

• battery
• diode
• switch
• resistor

A very thin piece of wire, which resists the current flow and gets red hot giving off light.

• bulb
• diode
• switch
• resistor

Allows current to pass through in one direction only.

• bulb
• diode
• switch
• resistor

Emits light when a current passes through it

• LDR
• diode
• LED
• resistor

Used to measure current (I).

• Voltmeter
• Ammeter
• LED
• resistor

Used to measure potential difference.

• Voltmeter
• Ammeter
• LED
• resistor

Limits the current in a circuit

• Variable resistor
• Fixed resistor
• LED
• diode

Allows the current to be varied in a circuit

• Variable resistor
• Fixed resistor
• LED
• diode

Designed to melt and break the circuit is the current is too great.

• LDR
• Fixed resistor
• fuse
• diode

Tags

NGSS.HS-ETS1-3