Current will cause a magnetic field in a conductor as follows:

1. 

Current will cause a magnetic field in a conductor as follows:
[A]. An ac current causes a fixed polarity magnetic field.
[B]. A dc current causes a fixed polarity magnetic field.
[C]. A dc current causes an alternating magnetic field.
[D]. An ac current causes a fixed polarity magnetic field and a dc current causes an alternating magnetic field.

Answer: Option B

Explanation:

No answer description available for this question.

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