507. Problem 37.9 (RHK) A charge q is distributed uniformly around a thin ring of
radius r. The ring is rotating about an axis through the centre and
perpendicular to its plane at an angular speed
(b) If L is the angular momentum of the ring, we have to show that
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Solution: Click For PDF Version We will first calculate the current in a ring of radius r containing charge q
which is uniformly distributed when the ring is rotating about an axis through
the centre and perpendicular to its plane at an angular speed
Therefore, the current
As the current
(b) Let m be the mass of the charge
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