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Subjects
Science State Board
Class 7
Electricity
Textbook questions
16.
Long answer II
Exercise condition:
4
m.
Explain the heating effect of electric current.
a.
Electrical energy is transformed to
heat
mechanical
when an electric current flows across a wire.
b
. Heating effect of electric current is used in
speaker
Water heater
.
c.
Example of heating effect of electric current
Geyser
Refrigerator
.
d.
The heating element in the heating devices are made up of
low melting point
high melting point
.
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