A magnetic field exerts a force on a particle of charge moving in the -plane

PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

A magnetic field B=(4.0×10−3k^) T\mathbf{B}=(4.0\times10^{-3}\hat{\mathbf{k}})\,\mathrm{T} exerts a force F=(4.0i^+3.0j^)×10−10 N\mathbf{F}=(4.0\hat{\mathbf{i}}+3.0\hat{\mathbf{j}})\times10^{-10}\,\mathrm{N} on a particle of charge 10−9 C10^{-9}\,\mathrm{C} moving in the xyxy-plane. Find the velocity of the particle.

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