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.