Physics - Magnetism Question with Solution | TestHub

An electron (mass $9\times 10^{-31}\mathrm{kg}$ and charge $1.6\times 10^{-19}\mathrm{C}$ ) moving with speed $\mathrm{c}/100(\mathrm{c}=$ speed of light) is injected into a magnetic field $\vec{B}$ of magnitude $9\times 10^{-4}\mathrm{T}$ perpendicular to its direction of motion. We wish to apply an uniform electric field $\vec{E}$ together with the magnetic field so that the electron does not deflect from its path. Then (speed of light $\mathrm{c}=3\times 10^8{\mathrm{ms}}^{-1}$ )NEET 2025