Q48. A proton has mass m and charge q. It is suspended in electric and gravitational field. What is the magnitude of electric field?Physics — Electrostatics — Question 48 of 361A. E = mg / q B. E = mg / qv C. E = mg / qvB D. E = q / mg Practice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →