The amount of the magnetic force on a charge is 2 Newtons. How much work does th

Question

The amount of the magnetic force on a charge is 2 Newtons. How much work does the magnetic force do? in Joules, as the charge moves around a circle with a radius of 5 meters? A charge of -8 coulombs with a mass of 4 kg is originally moving at 9 m/s in the +y direction in a magnetic head of 0 33 Tesla directed in the +z direction What is the radius, in meters, and the direction in which the charge moves around the circle- indicate direction by including a negative sign for the clockwise direction and not including sign for counter-clockwise.

Explanation / Answer

5] Work Done by a magnetic field around a closed loop is always zero.

=> W = 0 J.

6]

|F| = qvBsin90

this force will be equal to the centripetal force keeping the charging in a circular orbit.

qvB = mv2/r

r = mv/qB = (4 x 9)/8(0.33) = 13.64 m

Since the charge is negative, the charge will move clockwise.

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