The correct expression for the coulomb's force is:
Correct answer: B. F = 1/4πe0 x q1q2/r2 x r
- A. F-1=1/4πe0 x q1q2/r2 x r
- B. F = 1/4πe0 x q1q2/r2 x r
- C. F-1 = 1/4πe x q1q2/r2 x r
- D. F = 1/4πe x q1q2/r2 x r
Explanation
According to the expression of coulomb's law, the magnitude of Coulomb's force is directly proportional to the product of two point charges and inversely proportional to the square of the distance between them.
Last updated
About Coulomb's Law
Coulomb's law gives the electrostatic force between two point charges in terms of their magnitudes, separation and the medium between them. Questions involve attraction and repulsion, the inverse square relationship, superposition of forces and vector direction, which must not be confused with the electric field produced by a charge.
Practise Electrostatics
831 free Electrostatics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Physics questions like this
Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
According to Coulomb's law, the force between two point charges is proportional to
If a plastic sheet of relative permittivity 2.5 is inserted between two point charges placed in vacuum, then the electrostatic force between them
If the distance between two charges is halved and magnitude of charges are also doubled, then the force between these charges becomes:
If the distance between two identical charges is doubled, then the force of repulsion betweenthem decreases by
If the distance between two point charges is halved, the electrostatic force between them becomes