Question

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 1

(a) Longer line in the symbol for a cell represents its positive terminal. 

(b) The combination of two or more cells is called a battery. 

(c) When current is switched ‘on’ in a room heater, it becomes hot. 

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