- #1
damosuz
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A teacher demonstrates Oerted's experiment in class. He places a compass on top of a straight wire and then shows that when a current flows in the wire, the compass needle moves. Since a compass always moves under the effect of a magnetic field, he says the experiment shows that an electric current produces a magnetic field.
A student asks him how can we be sure it is not an electric field that affects the compass needle. What should the teacher answer?
Thank you.
A student asks him how can we be sure it is not an electric field that affects the compass needle. What should the teacher answer?
Thank you.