A wire is carrying current vertically downwards. To the east of the wire, the magnetic field would be directed to
A
East
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B
West
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C
Into the plane of the paper
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D
Out of the plane of paper
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Solution
The correct option is D Out of the plane of paper The current in the wire is in the downward direction. Using the right-hand thumb rule we see that the direction of the magnetic field to the east of the wire is coming out of the plane of paper.