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Physics CBSE Live product
Class 8 (2025-26)
Electricity: Magnetic and heating effects
Revision I - Electricity: Magnetic and heating effects
8.
Magnetic behaviours
Question:
3
m.
Choose the correct answer carefully below:
1.
Reversing the direction of current
-
Increases the magnetic poles of the electromagnet only
Decreases the magnetic poles of the electromagnet only
Stops the magnetic poles of the electromagnet
Reverses the magnetic poles of the electromagnet
2.
Polarity
-
The arrangement of north and south poles of an electromagnet
The size of the electromagnet
The resistance of the coil
The strength of the magnetic field
3.
Control of magnetism
-
Magnetism remains constant always
Magnetism can be increased, decreased, or switched off
Magnetism can be increased only
Magnetism can be decreased only
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