An electron experiences a magnetic force of magnitude when moving at an angle of with…

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

Problem

An electron experiences a magnetic force of magnitude

4.60\times10^{-15}\,\text{N}

when moving at an angle of

60^\circ

with respect to a magnetic field of magnitude

3.50\times10^{-3}\,\text{T}

. Find the speed of the electron.