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 the current is switched ‘on’ in a room heater, it _______. (d) The safety device based on the heating effect of electric current is called a
ScienceClass 7CBSEAnswered 27 Mar 2026
Answer
Solution:
(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 the current is switched ‘on’ in a room heater, it produces heat.
(d) The safety device based on the heating effect of electric current is called a fuse.
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