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Subjects
Science State Board
Class 7
Electricity
Textbook questions
12.
Very short answer III
Exercise condition:
3
m.
1. Name some devices that run using heat effect of electric current.
a.
Electrical devices
-
Geyser, Iron box
LED
2. Name few insulators.
a.
Insulators
-
Wood, Glass
Copper, Iron
3. What is a battery?
a.
Batteries are made up of one or more cells that produce an
electron
neutron
flow in a circuit through chemical processes.
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