AIIMS 2018 Physics Electric Field MCQ Question
Assertion : For a non-uniformly charged thin circular ring with net charge is zero, the electric field at any point on axis of the ring is zero.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false
Correct Answer
Detailed Explanation
The assertion is false because a non-uniformly charged thin circular ring with a net charge of zero can still produce an electric field at points along its axis due to the uneven distribution of charge, which causes the electric fields from different segments of the ring to not completely cancel out. Therefore, the electric field at any point on the axis is not necessarily zero. Other options are incorrect because they either assume the assertion is true or misinterpret the nature of electric fields generated by non-uniform charge distributions. Understanding that electric fields depend on both the magnitude and distribution of charge is crucial in electrostatics.
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