Question

2) The strength of the magnetic field between the poles of an electromagnet would be unchanged if :
a) Current in the electromagnet winding were doubled
b) Direction of current in electromagnet winding were reversed
c) Distance between poles of electromagnet were doubled
d) Material of the core of electromagnet were changed.​

Answer 1

Answer:

Your answer is b) direction of the current in electromagnet is reversed

Explanation:

Answer 2

Answer:

Option:B

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