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Physics CBSE Live product
Class 8 (2026-27)
Electricity: Magnetic and Heating Effect
Heating Effect & Electric Cells
2.
Heating effect of electric current
Question:
2
m.
Read the question carefully and answer them.
Why is the heating effect of electric current considered both useful and harmful? Give one reason for each.
It is useful because it
cools electrical appliances and machines
provides heat for appliances and industrial processes
produces electricity without using energy
stores electric current for future use
.
It is harmful because excessive heating can
waste energy and damage electrical equipment
increase the efficiency of electrical appliances
make electrical equipment last forever
save energy and damage electrical equipment
.
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