Electric Switch


 
 
Concept Explanation
 

Electric Switch

 We use electric switches to put on or off the electrical device and machines. An electric switch is a device that is used to open or close an electric circuit. In an electrical circuit, a switch is sometimes referred to as a ‘key’.

When the key is closed, the electric circuit is complete and the current is allowed to flow through the circuit . The appliance, which is the part of the circuit, works. When the key is open, the circuit is incomplete, no current flows and the appliances does not work.

                             

                                                                    Electric Switch                                   

Sample Questions
(More Questions for each concept available in Login)
Question : 1

When a switch is in off position,

  1. Circuit starting from the positive terminal of the cell stops at the switch.
  2. Circuit is open.
  3. No current flows through it
  4. Current flows after sometime

Choose the combination of correct answer from the following...

Right Option : B
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Explanation
Question : 2

An electric switch is a device that is used to _____________ an electric circuit.

Right Option : C
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Explanation
Question : 3

When electric switch is closed then there is ________________ in the circuit.

                   

Right Option : A
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Explanation
 
 
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