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The magnetic field produced by a current-carrying solenoid most closely resembles the field of a:
AHorse-shoe magnet's gap
BBar magnet
CStraight current-carrying wire
DSingle point charge
Answer & Solution
Correct answer: B. Bar magnet
1. A solenoid's field lines emerge from one open end (north pole) and enter the other (south pole).
2. The chapter states the properties of a solenoid's magnetic field are very similar to those of a bar magnet, with the field inside being uniform.
3. The option a straight wire gives circular field lines, not the bar-magnet pattern, so it is rejected.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 4 "Effects of Electric Current", p.63_
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