Factors affecting the strength of an electromagnet — task. Physics CBSE Live product, Class 8 (2026-27).

Choose the correct answer:

Which of the following factors influence the strength of an electromagnet?

Only the material of the core decides how strong the electromagnet becomes
Only the electric current flowing through the coil determines the strength of the electromagnet
Only the number of turns of wire around the core affects the magnetic strength
The electric current, number of turns of wire, and type of core material all together affect the strength

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7. Factors affecting the strength of an electromagnet