An electric field of 1500 volts/metre and a magnetic field of 0.40 weber/metre ${ }^{2}$ act on a mo

Question

An electric field of 1500 volts/metre and a magnetic field of 0.40 weber/metre ${ }^{2}$ act on a moving electron to produce no force. What is the electron's speed v\

Professor PC Thomas Classes · Answer

For no force $\mathrm{Bqv}=\mathrm{qE}$\ $v=\frac{E}{B}=$\