Electrical Components

Switch

Device used to make and break electric current through a circuit.

Ammeter

Measures the electrical current in a circuit, using measuring units AMPS (A).

Light Bulb

Transfers electrical energy to light energy by making a metal filament glow.

Cell

A single electrical energy source that uses chemical reactions to produce a current.

Voltmeter

Measures the difference in electrical potential energy between two points in an electric circuit.

Resistor

A passive electrical component that limits the flow of electric current.

Motor

Converts electrical energy to mechanical energy.

Battery

Stores chemical energy and converts it to electrical energy; involves the flow of electrons.

Thermistor

Temperature sensors that are used in fire alarms. Low temps ⟶ resistance of thermistor high ⟶ little current.

Light-emitting diode (LED)

(LED) a light source that emits light when current flows through.

Variable Resistor

Variable resistors are able to control their electrical resistance (adjust).

Diode

Allows current to only flow in one direction through it.

Light-dependent resistor (LDR)

Detects light levels.