JEE Main 2013 — Magnetic Effects of Current Question with Solution
JEE Main 2013 (25 Apr Online)
Question
One of the two small circular coils, (none of them having any self - inductance) is suspended with a V-shaped copper wire, with plane horizontal. The other coil is placed just below the first one with plane horizontal. Both the coils are connected in series with a dc supply. The coils are found to attract each other with a force.
Which one of the following statements is incorrect?
Choose an option
Show full solutionCorrect option: D
Correct answer
DForce is proportional to
Step-by-step explanation
As the force between the two coils is attractive hence currents in the coil must be in the same direction and the force,
where and are the currents flowing through the coils.
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This is a previous-year question from JEE Main 2013, covering the Magnetic Effects of Current chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.