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Physics CBSE Live product
Class 10
Magnetic effects of electric current
Electromagnetism and magnetic effect of current
4.
Earth as a magnet
Question:
4
m.
1
.
Which of the following is not supposed to be the cause of Earth’s magnetic field?
Motion of molten iron in the Earth’s core
Presence of magnetic materials in the Earth’s crust
Electric currents in the atmosphere in the Earths's curst
Earth’s rotation
2
.
What are the ends of a bar magnet called?
Edges
Poles
Points
Corners
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