Question

ANSWER THIS QUESTION.......FAST!!​

Answer 1

Answer:

(4) Zero

Explanation:

When a straight wire carries a current, then magnetic field is produced around it is determined by Right hand thumb rule, as shown in the figure.

Now, as in question, if $B_{T}$ is tangential magnetic field of the circle as shown, then it's value will be zero, because no any magnetic field lines pass parallel to it.

Answer 2

Answer:

4

Explanation:

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