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Physics · 2023 · 1 mark
CBSE 2023 · Region 4 · Set 3 · Q4
A particle of mass m and charge - q is moving with a uniform speed v in a circle of radius r, with another charge q at the centre of the circle. The…
A particle of mass $\displaystyle \mathrm{m}$ and charge $\displaystyle -\mathrm{q}$ is moving with a uniform speed $\displaystyle \mathrm{v}$ in a circle of radius $\displaystyle r$, with another charge $\displaystyle \mathrm{q}$ at the centre of the circle. The value of $\displaystyle r$ is :
Official answer
(B)
$\displaystyle \frac{1}{4 \pi \varepsilon_{0} \mathrm{~m}}\left(\frac{\mathrm{q}}{\mathrm{v}}\right)^{2}$
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