A vertical wire carries a current upward. The magnetic field at north of the wire will be directed.
Question
A vertical wire carries a current upward. The magnetic field at north of the wire will be directed.
Solution
The direction of the magnetic field can be determined using the right-hand rule. Here are the steps:
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Point your right thumb in the direction of the current. In this case, the current is flowing upward, so your thumb should be pointing up.
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Now, curl your fingers. The direction in which your fingers are curling represents the direction of the magnetic field.
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If you are standing to the north of the wire and looking at it, your fingers will be curling in a counterclockwise direction.
So, the magnetic field at the north of the wire will be directed towards the west.
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