Question 214: Magnetism and Matter

Question

A charge q is spread uniformly over an insulated loop of radius r.  If it is rotated with an angular velocity $$\omega $$ with resect to normal axis then the magnetic moment of the loop is :

Accepted Answer

Magnetic moment,
$$\mu $$ = I A
= $${q \over T}\left( {\pi {r^2}} \right)$$
= $${q \over {2\pi /\omega }}\left( {\pi {r^2}} \right)$$
= $${{qw} \over {2\pi }}$$ $$\left( {\pi {r^2}} \right)$$
= $${1 \over 2}$$ q$$\omega $$r
2

Answer

q $$\omega $$r2

Answer

$${4 \over 3}$$ q $$\omega $$r2

Answer

$${3 \over 2}$$ q $$\omega $$r2

Answer

$${1 \over 2}$$ q $$\omega $$r2

Magnetism and Matter

A charge q is spread uniformly over an insulated loop of radius r. If it is rotated with an angular velocity $\omega $ with resect to normal axis then the magnetic moment of the loop is :

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