describe a simple experiment to show that an electric current produces a magnetic effect
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Answer: Place several magnetic compass needles in a circle, around a conducting wire which can carry current. Provide a switch so that the current through the wire can be switched on and off. ... The direction of the magnetic field is given by the direction of the closing fingers of hand.
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Electric current produces a magnetic field. This magnetic field can be visualized as a pattern of circular field lines surrounding a wire. One way to explore the direction of a magnetic field is with a compass, as shown by a long straight current-carrying wire in
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