SSC JE Electrical Engineering 2017 Set 3 Paper

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Question : 118 of 200

Marks: +1, -0

Does the electric current always produce a magnetic field?

No, only large currents produce a magnetic field
No, a magnetic field is produced only in the presence of an iron core
No, a magnetic field is produced only in the presence of a coil
Yes, the electric current always produce a magnetic field

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