Question Detail
Question
Which of the following is correct about the application of Gauss's law in the determination of electric field? I. It can be applied if the charge distribution is known II. The law can be applied if the object has enough symmetry III. It can be applied if the applied force and the angle of inclination are known
Correct Answer
Option A is the correct answer.
Detailed Explanation
Gauss's law is practically useful for finding E only when (I) you know the charge distribution and (II) there is enough symmetry (spherical, cylindrical or planar) to pull E outside the integral. Statement III describes force/angle information, which is not a condition for applying Gauss's law.
Hint
Gauss's law is practically useful for finding E only when (I) you know the charge distribution and (II) there is enough symmetry (spherical, cylindrical or p...