Physics · 2020
JEE Main · 6 September 2020, Shift 2 · Q14
A charged particle going around in a circle can be considered to be a current loop. A particle of mass m carrying charge q is moving in a plane with…
A charged particle going around in a circle can be considered to be a current loop. A particle of mass m carrying charge q is moving in a plane with speed $\displaystyle v$ under the influence of magnetic field $\displaystyle \vec{B}$. The magnetic moment of this moving particle :
Official answer
(2)
$\displaystyle -\frac{\mathrm{m} v^2 \overrightarrow{\mathrm{~B}}}{2 \mathrm{~B}^2}$
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.