Physics · 2019
JEE Main · 12 January 2019, Shift 2 · Q20
A 10 m long horizontal wire extends from North East to South West. It is falling with a speed of 5.0 ms^-1, at right angles to the horizontal…
A $\displaystyle 10$ m long horizontal wire extends from North East to South West. It is falling with a speed of $\displaystyle 5.0 \mathrm{~ms}^{-1}$, at right angles to the horizontal component of the earth's magnetic field, of $\displaystyle 0.3 \times 10^{-4} \mathrm{~Wb} / \mathrm{m}^2$. The value of the induced emf in wire is :
Official answer
(1)
$\displaystyle 1.1 \times 10^{-3} \mathrm{~V}$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.