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Magnetic Field Due to a Circular Ring on the Axis

A straight wi...

Question

A straight wire carries conventional current toward the sky. What is the direction of the magnetic field due to the current west of the wire?

A

north

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B

south

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C

east

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D

west

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E

up

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Solution

The correct option is D south
Magnetic field wraps around a current carrying wire as shown in figure.
The current flows towards sky. Hence clearly from figure, the magnetic field to the west of the wire is towards south.

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