What is the function of a key (or switch) in an electric circuit?

Question

KnowledgeBoat · Accepted Answer

A key is used to put the current on and off in a circuit. When key is open (i.e., the plug is taken out), the circuit is incomplete. When key is closed (i.e., the plug is put in) current flows through the circuit and the circuit is said to be closed.

Physics

What is the function of a key (or switch) in an electric circuit?

Current Electricity

Answer

Related Questions

State the two kinds of cell. Give one example of each.

Name the instrument used to control current in an electric circuit.

What is a primary cell? Name two such cells.

What is a secondary cell? Name one such cell.