A charge moves northward at through a region where a uniform magnetic field points…

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

3.0\,\text{mC}

charge moves northward at

250\,\text{m\,s}^{-1}

through a region where a uniform

0.40\,\text{T}

magnetic field points due east. What are the magnitude and direction of the magnetic force acting on the charge? (a)

0.30\,\text{N}

, directed vertically upward (b)

0.12\,\text{N}

, directed vertically downward (c)

0.30\,\text{N}

, directed vertically downward (d)

0.30\,\text{N}

, directed toward the west