Fill in the blanks: (a) Longer line in the symbol for a cell represents its ____________ terminal.
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 ____________.
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(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.
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