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What is the magnetic moment of each piece when a bar magnet of moment 'M' is cut into two equal parts (i) along its axis and (ii) along its equatorial line. |
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Answer» Solution : Magnetic moment of the magnet, M = 2LM i) When the magnet is cut ALONG its axis, LENGTH remains same but pole strength becomes m/2. Now the magnetic moment of each piece `= 2l xx (m)/(2) = (M)/(2)` ii) When the magnet is cut along its equatorial LINE, pole strength remains same but length becomes ` (2l)/(2)` Now the magnetic moment of each piece `=(2l)/(2) xx m =(M)/(2)` |
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