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Subjects
Science CBSE
Class 7
Electric current and its effects
Circuits, heating and magnetic effects
14.
Magnetic effect in electromagnets
Exercise condition:
5
m.
Select the right answer from the given options
:
1
.
MCB
CFL
LED
bulbs are more efficient than any other bulbs.
2
.
When a current is passed through a coil, it behaves like a
magnet
element
electromagnet
.
3
.
The compass needle points to the
north-south
east-west
south-north
direction at rest.
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