- #1

marpple

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**A plastic circular loop of radius R and a positive charge q is distributed uniformly around the circumference of the loop. The loop is then rotated around its central axis, perpendicular to the plane of the loop, with angular speed omega.**

**If the loop is in a region where there is a uniform magnetic field B directed parallel to the plane of the loop, calculate the magnitude of the magnetic torque on the loop.**

well, i did this

**F=qvB**

and know that v = w(omega).R

it gives me F=qwRB

and Torque = F. L, then i got T=qwR^2B

and know that v = w(omega).R

it gives me F=qwRB

and Torque = F. L, then i got T=qwR^2B

my answer seems not correct.., please advise.