An electron moving with speed c/100 is injected into a magnetic field

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