Question 1 of 9beginner💡 UnderstandShort Answer1 mark
Choose the incorrect statement.
(i)
A switch is the source of electric current in a circuit.
(ii)
A switch helps to complete or break the circuit.
(iii)
A switch helps us to use electricity as per our requirement.
(iv)
When the switch is in 'OFF' position, there is an air gap between its terminals.
Explanation
The chapter explains that an electric cell is a portable source of electrical energy (page 3). A switch is described as 'a simple device that either completes or breaks a circuit' (page 10). The switch controls the flow of current but does not generate or supply electrical energy. Statements (ii), (iii), and (iv) are all correct descriptions of a switch's function.