GEOLOGY

EARTH SCIENCE

MAGNETISM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What does the switch do in a circuit?
A
It supplies the power.
B
It carries electricity.
C
It opens and closes the circuit.
D
It is an insulator.
Explanation: 

Detailed explanation-1: -An electric switch is an electrical component that breaks or closes an electric circuit. Opening the switch (breaking the circuit) means turning off the electrical device and closing the switch (completing the circuit) allows an electrical current to flow so that the device is on.

Detailed explanation-2: -The terms “open” and “closed” refer to switches as well as entire circuits. An open switch is one without continuity: current cannot flow through it. A closed switch is one that provides a direct (low resistance) path for current to flow through.

Detailed explanation-3: -Electric current flows only in those circuits which are in a closed loop. When the switch is in open position, the circuit becomes incomplete and hence, current will not flow in the circuit.

Detailed explanation-4: -The function of switch in an electric circuit is to either make or break the electric circuit. A switch is used to turn current to an electrical appliance either on or off.

Detailed explanation-5: -A device designed to open or close a circuit under controlled conditions is called a switch.

There is 1 question to complete.