MHT CET 2021 20th September Morning Shift | Moving Charges and Magnetism Question 19 | Physics

An electron (e) moves in circular orbit of radius 'r' with uniform speed 'V'. It produces magnetic field 'B' at the centre of circle. The magnetic field B is $$\left(\mu_0=\right.$$ permeability of free space)

$$\frac{\mu_0 \mathrm{e}}{4 \pi}\left(\frac{\mathrm{V}}{\mathrm{r}^2}\right)$$

$$\frac{\mu_0 \mathrm{e}}{4 \pi} \mathrm{Vr}^2$$

$$\frac{\mu_0 \mathrm{e}}{4 \pi}\left(\frac{\mathrm{V}}{\mathrm{r}}\right)$$

$$\frac{\mu_0 \mathrm{e}}{4 \pi} \mathrm{Vr}$$

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Chemistry

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Straight Lines and Pair of Straight Lines Circle