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>> $Write the expression for the equivalent$

Question

Write the expression for the equivalent magnetic moment of a planer current loop of area $A$ . having $N$ turns and carrying a current $i$ . Use the expression to find the magnetic dipole moment of a revolving electron.

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Updated on : 2022-09-05

Solution

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for a revolviing electron $.$
for $1$ revolution number of terms $= 1$
$i = \frac{e}{t}$
$= \frac{e V}{2 π R}$
$M = i N A$

$= \frac{e V}{2 π R} \times 1 \times π R^{2}$

$= \frac{e V R}{2}$
we get $,$
$\frac{e V R}{2}$

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