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Magnetic Effects of Electric Current

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The strength of a magnetic field is affected by

(a) electric current
(b) number of field lines
(c) direction of field lines
(d) direction of current

AnswerClick to flip back
A
Only a and b
💡 Explanation:

Yes, it is correct. The strength of a magnetic field increases with an increase in current. Crowded field lines show stronger magnetic field.

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