NEET Physics Coulomb's Law Assertion Reason Question
Assertion (A): Coulomb's law involves a constant of proportionality k which is approximately 9 x 10^9 N m^2 C^-2 in SI units.
Reason (R): The unit of charge, coulomb, is defined based on the magnetic effect of current rather than directly from Coulomb's law.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false but R is true.
Correct Answer
Detailed Explanation
Both statements are true. The constant k is specified in SI units when the unit of charge is based on Ampere’s law, thus explaining the value of k.
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