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Physics CBSE Live product
Class 8 (2026-27)
Electricity: Magnetic and Heating Effect
Term I Revsion I - Electricity: Magnetic and Heating Effect
6.
Factors affecting the strength of an electromagnet
Question:
3
m.
Choose the correct answer below:
Which factor changes the magnetic poles of an electromagnet without changing its construction?
Increasing the number of cells
Reversing the direction of electric current
Using a thicker iron nail
Increasing the number of turns
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