NEETPhysicsElectrostatics
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : In a given situation of arrangement of charges, an additional charge is placed outside the Gaussian surface. In this situation, in the Gauss theorem ( E d s = q _ in ₀ , q _ in ) remains unchanged whereas electric field ( E ) is changed. Reason (R) : Electric field ( E ) at any point on the Gaussi
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A).
- BBoth (A) and (R) are true and (R) is NOT the correct explanation of (A).
- C(A) is true but (R) is false.
- D(A) is false but (R) is true.
Correct answer
A. Both (A) and (R) are true and (R) is the correct explanation of (A).
Step-by-step solution
Assertion (A): In a given situation of arrangement of charges, an additional charge is placed outside the Gaussian surface. In this situation, in the Gauss theorem ( E d s = q_ in ₀ , q_ in ) remains unchanged whereas electric field ( E ) is changed. - This statement is true. According to Gauss's law, the total electric flux through a closed surface depends only on the charge enclosed within that surface. If an additional charge is placed outside the Gaussian surface, (q_ in ) does not change, but the electric fiel