Question

A wire is carrying current I. The field intensity H at a distance r from the wire

a.

is directed towards wire

b.

is directed away from wire

c.

is tangential every where to a circle of radius r

d.

none of the above

Answer: (c).is tangential every where to a circle of radius r

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Q. A wire is carrying current I. The field intensity H at a distance r from the wire

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