An electron and a proton are separated by a certain distance. Part A - Do they e

Question

An electron and a proton are separated by a certain distance.

Part A -

Do they exert attractive or repulsive forces on each other?

attractive or

repulsive

Part B -

Which particle, if any, experiences a greater force?

A- Same force according to Newton's 3rd law

B- Proton

C- Electron

Part C -

Which particle, if any, experiences a great acceleration on as a result of this force?

A- same, according to Newton's 3rd Law

B- electron, according to Newton's 2nd Law

C- proton, according to Newton's 2nd Law

attractive or

repulsive

Explanation / Answer

Part A.

In electrostatic force,

If both charge have same sign then force will be repulsive

If both charge have different sign then force will be attractive

Since electron = -ve & proton = +ve, So force will be attractive

Part B.

from Newton's third law

Force experienced will be same on both particles.

F = kq1*q2/r^2

since r, q1, & q2 are same in both cases so force will be same.

Correct option A.

Part C.

acceleration is given by:

a = F/m

Since force is constant, So particle which have lower mass will experience greater acceleration

mass of e = 9.1*10^-31 kg

mass of p = 1.67*10^-27 kg

Since mass of e < mass of p

acceleration of e > acceleration of p

Correct option B

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