Q. 83.8( 86 Votes )

Fill in the blanks:

a. Longer line in the symbol for a cell represents its ________terminal.

b. The combination of two or more cells is called a ______.

c. When current is switched ‘on’ in a room heater, it ___________.

d. The safety device based on the heating effect of electric current is called a _________.

Answer :

a. Longer line in the symbol for a cell represents its positive terminal. A battery has two ends. The longer line represents positive end and the shorter line represents negative end.


b. The combination of two or more cells is called a battery. When two or more cells are combined together, they are known as battery.


c. When current is switched ‘on’ in a room heater, it gets heated. This happens because of heating effects of current.


d. The safety device based on the heating effects of electric current is called a fuse. Using an electric fuse prevents the flow of unduly high electric current and protects the appliances from the damage.


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