1. A student comments: \"if we bring the north pole of a bar magnet close to one
ID: 1548434 • Letter: 1
Question
1. A student comments: "if we bring the north pole of a bar magnet close to one end of a current carrying solenoid and the bar magnet and the solenoid attract, then if I bring the south pole of the bar magnet close to the same end of the solenoid, the two will repel. This is because the solenoid is also a magnetic dipole (magnet) with north poles and sound poles at the two ends." Explain why you agree or disagree.
2. A student comments: "If we bring together the ends of two solenoids with different currents flowing through them, the one with larger current through its coils will exert a greater force on the solenoid carrying the smaller current" Explain why you agree or disagree.
Explanation / Answer
1 Agree.
Because, The solenoid has North and South pole at the ends like a bar magnet. And we know that fact that the like pole attacts each other and unlike pole repels each other. So when north pole of bar magnet is braught closer to that of the solenoid's they attracted, but when south is braught closer they repelled.
2)Disagree
The solenoids can be modelled as wires carring current, so if the current flowing through them is not same in the magnitude or not both will experience the same magnitude of force due to each other. The direction of current in solenoids decides that if the force is attractive or repulsive.
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