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Limits the flow of electric current in a circuit.

Stores energy in a magnetic field when electric current flows through it.

A semiconductor light source that emits light when current flows through it.

Allows current to flow in one direction only, acting as a one-way valve.

An electrically operated switch using an electromagnet to mechanically operate a circuit switch.

A resistor with a variable (adjustable) resistance.

A set of electronic circuits on one small flat piece (or 'chip') of semiconductor material.

A safety device consisting of a strip of wire that melts and breaks an electric circuit if the current exceeds a safe level.

A device for making, breaking, or changing the connections in an electrical circuit.

Stores energy in an electric field between its plates.

Transfers electrical energy between two or more circuits through electromagnetic induction.