Aplastic circular loop has 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 v. if the loop is in a region where there is a uniform magnetic field b s directed parallel to the plane of the loop, calculate the magnitude of the magnetic torque on the loop.

Explanation:

As we know that charge is uniformly distributed on the circumference of the circular loop

so here we have

total charge = q

also we know that loop is moving with uniform angular speed

angular speed =

now we know that current in the loop due to motion of the ring is given as

now the magnetic moment of the loop is given as

now we know that the torque on the loop is given as

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.