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Science CBSE Homework Assignments
Class 7
Electric current and its effects
Electromagnets
2.
Magnetic effect in electromagnets
Question:
5
m.
Select the right answer from the given options
:
1
.
MCB
LED
CFL
bulbs are more efficient than any other bulbs.
2
.
Wear and tear of insulation on the wires causes a
overload
electricity
short circuit
.
3
.
The compass needle points to the
east-west
south-north
north-south
direction at rest.
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