Question

An electron of mass m_e, initially at rest, moves through a certain distance in a uniform electric field in time t₁. A proton of mass m_p, also initially at rest, takes time t₂ to move through an equal distance in this uniform electric field. Neglecting the effect of gravity, the ratio t₂/t₁ is nearly equal to

(a) 1

(b) (m_p/m_e)^1/2

(c) (m_e/m_p)^1/2

(d)1836

Answer 1

Correct Answer is: (b) (m_p/m_e)^1/2

Equal forces act on the two as they have equal charges.

If F = force, d = distance travelled,