A uniform circular ring of radius R, mass m has uniformly distributed charge q. The ring is free to
rotate about its own axis (which is vertical) without friction. In the space, a uniform magnetic field
B. directed vertically downwards, exists in a cylindrical region. Cylindrical region of magnetic field
is coaxial with the ring and has radius T greater than R. If magnetic field starts increasing at a
dB
=a, angular acceleration of the ring will be
dt
GR dB
a)
b)
d)
2rm dt
2ml dt
dt
constant rate
qRdB
9 dB
GR dB
rm dt
Answers
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Answer:
radius is 384050.58
Explanation:
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