Short Answer Type Question
Q. 1. A steel wire of length 1 has a magnetic moment M. It is then bent into semicircular arc. What is the new magnetic moment ?
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Q. 2. Two identical looking iron bars A and B are given, one of which definately known to be magnetised. How would one ascertain, whether or not both are magnetised ? If only one is magnetised, how does one ascertain which one ? Use nothing else but the two bar A and B.
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Q. 3. What are isodynamic, isogonic and agonic lines ?
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Q. 4. A magnetic needle is placed on a cork floating on a still lake in the northern hemisphere. Does this needle together with the cork move towards the north of the lake ?
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Q. 5. Magnetic field arises due to charges in motion. Can a system have magnetic moment even through its net charge is zero ?
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Q. 6. How are magnetic materials classified ?
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