Question

A -150 μC charge moves with a velocity ?. If a magnetic field of 0.48 T westward produce a southward force of 1.5 m N. Calculate the magnitude and direction of the charge’s velocity.

Answer 1

magnitude of force = qVB

where q = charge , V = velocity , B = magnetic field

0.0015 = 150*10^-6*V*0.48

V = 20.83 m/s

so magnitude of velocity is 20.83 m/s

The direction of magnetic force is determined by Fleming's right hand rule which states that the direction of the magnetic force on a positive moving charge,point the thumb of the right hand in the direction of v, the fingers in the direction of B, and a perpendicular to the palm points in the direction of F.

so the direction of velocity will be inside the page