Physics · 2013
JEE Main · 25 April 2013, Shift 1 · Q4
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.…
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 ?
Official answer
(4)
Force is proportional to $\displaystyle \mathrm{d}^{-2}$
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JEE Main 2013 Physics question, with the answer from NTA’s final answer key. Where our answers come from.