4. For plotting a magnetic field around a bar magnet, the device used is
(a) magnetic needle
(b) magnetic compass
(c) tracing needle
(d) none of these
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Answer:
A compass contains a small bar magnet on a pivot so that it can rotate. The compass needle points in the direction of the Earth's magnetic field, or the magnetic field of a magnet. Magnetic fields can be mapped out using small plotting compasses : place the plotting compass near the magnet on a piece of paper.
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1
Answer:
magneting needle is plotting a magnetic field around a bar magnetiv the device used
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