GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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is a fundamental physical law.
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uses a proportionality constant.
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invokes the inverse-square law.
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involves repulsive as well as attractive forces.
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Detailed explanation-1: -In Coulomb’s Law the electrostatic force may be positive or negative. In Newton’s Law of Gravitation the force is always negative. A positive force in these contexts indicates a force that is repulsive and a negative force is attractive. Thus gravitational forces are always attractive.
Detailed explanation-2: -In the case of Coulomb’s law, the forces are inversely proportional to the square of the distances between the charges, and in the case of Newton’s law of gravitation, the forces are inversely proportional to the square of the distances between the masses.
Detailed explanation-3: -Updated On: 27-06-2022. 1) The gravitational force between two masses is always attractive but Coulomb force between two charges can be attractive or repulsive, depending on the nature of charges.
Detailed explanation-4: -Some similarities are that they are both inverse square laws, they both depend on the product, (M1M2) or (Q1Q2), and they both involve coupling constants, G for Newton’s law, and k=1/(40), for Coulomb’s law.
Detailed explanation-5: -Coulomb’s law defines force between charges whereas Newton’s law of gravitation defines force between masses. 2. Both are inverse square laws i.e. the forces are inversely proportional to the square of the distances between charges in case of Coulomb’s law and between masses in case of Newton’s law of gravitation.