Physics · 2019
JEE Main · 9 April 2019, Shift 2 · Q21
Two coils ' P ' and ' Q ' are separated by some distance. When a current of 3 A flows through coil ^′ P^′, a magnetic flux of 10^-3 Wb passes through…
Two coils ' $\displaystyle P$ ' and ' $\displaystyle Q$ ' are separated by some distance. When a current of $\displaystyle 3$ A flows through coil $\displaystyle { }^{\prime} \mathrm{P}^{\prime}$, a magnetic flux of $\displaystyle 10^{-3} \mathrm{~Wb}$ passes through ' $\displaystyle Q$ '. No current is passed through 'Q'. When no current passes through 'P' and a current of $\displaystyle 2$ A passes through ' $\displaystyle Q$ ', the flux through ' $\displaystyle P$ ' is :
Official answer
(1)
$\displaystyle 6.67 \times 10^{-4} \mathrm{~Wb}$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.