two identical bar magnets ,each of magnetic moment M , are placed as shown in figure. Magnetic field at point P is
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Explanation:
Take a thick straight conductor XY and pass it through the centre of a thick cardboard. Pass current through the conductor such that it flows from X to Y. Sprinkle some iron filings on the cardboard and gently tap. You will see that the iron filings arrange themselves in concentric circles around the wire.
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