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Question
Which of the following correctly describes the magnetic field near a long straight wire?
Options
The field consists of straight lines perpendicular to the wire
The field consists of straight lines parallel to the wire
The field consists of radial lines originating from the wire
The field consists of concentric circles centred on the wire
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Solution
The field consists of concentric circles centred on the wire.
Explanation:
The magnetic field near a long straight wire consists of concentric circles centred on the wire.
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