A particle that has a charge of 7.4 μC moves with a velocity of magnitude 3 * 105 m/s along the + x axis. It experiences no magnetic force, although there is a magnetic field present. The maximum possible magnetic force that the charge with the given speed could experience has a magnitude of 0.520 N. Find the magnitude and direction of the magnetic field. Note that there are two possible answers for the direction of the field.

Question

Physics

Valentin Holland

9 September, 15:04

A particle that has a charge of 7.4 μC moves with a velocity of magnitude 3 * 105 m/s along the + x axis. It experiences no magnetic force, although there is a magnetic field present. The maximum possible magnetic force that the charge with the given speed could experience has a magnitude of 0.520 N. Find the magnitude and direction of the magnetic field. Note that there are two possible answers for the direction of the field.

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Cheddar · Answer 1

F = qvB

Where F equal to the magnetic force on the particle.

q = charge on the particle

v = velocity of the particle

B = Magnetic field

F = 0.520N

q = 7.4 μC = 7.4*10-⁶C

v = 3*10⁵m/s

B=?

B = F/qv

B = 0.520 / (7.4*10-⁶ * 3*10⁵)

B = 0.234T.