Question

Let $E$, $G$ and $N$ represent the magnitudes of electromagnetic, gravitational and nuclear forces between two electrons at a given separation. Then

• A. $N>E>G$
• B. $E>N>G$
• C. $G>N>E$
• D. $E>G>N$

Answer 1

The correct option is D $E>G>N$

Nuclear Forces are closely ranged. There effects are negligible outside nucleus. In the given case electrons are kept at the separation and there is no involvement of the nucleus.Thus, magnitude of nuclear force will be very less.

For the Gravitational Force, it depends upon the mass of the body. Thus, as the Mass increases the Gravitational Force also increases and Vice versa. We know the mass of the Electrons is 9.1 × 10⁻³¹ kg, which is very less, thus the gravitational force between the electrons at the given separation will also be less but it magnitude will be more than the Nuclear force.

For the Electromagnetic Force, Charged particles are necessary. Electrons are the charged particles whose charge is exactly equals to the charge on the protons but mass of the Electrons is much less. Hence, the Magnitude of the Electromagnetic force is largest than the other two.


Thus, the Sequence of the Magnitude in descending order of the Forces is ⇒
E > G > N