Question

A non conducting ring of radius r has charge q distributed uniformly over it. If it rotate with angular velocity w then the equivalent current is –

• A. $\frac { q \omega } { 2 \pi }$
• B. $\frac { 2 \pi } { q \omega }$
• C.
• D. qrw

Answer 1

Answer: (A)

$\frac { q \omega } { 2 \pi }$

Answer 2

I = $\frac { q } { T }$ or $\frac { q \omega } { 2 \pi }$