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As shown in the figure below, an ellipsoidal cavity is carved within a perfect conductor. A positive charge Q is placed at the centre of the cavity. If points A and b are shown on the cavity surface (see figure), then which among the following choices is correct?
  • a)
    Potential at A = Potential at B
  • b)
    Charge density at A = Charge density at B
  • c)
    Electric field near A = Electric field near B
  • d)
    Total electric flux at the surface of the cavity = zero
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
As shown in the figure below, an ellipsoidal cavity is carved within a...
Electric field at A is different from field at B because, E= K/r2
we know that conductor is an equipotential surface, so potential will be the same at A and B.
As charge density, σ∝1/r​, then charge density is different at A and B.
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Most Upvoted Answer
As shown in the figure below, an ellipsoidal cavity is carved within a...
Electric field at A is different from field at B because, E= K/r2
we know that conductor is an equipotential surface, so potential will be the same at A and B.
As charge density, σ∝1/r​, then charge density is different at A and B.
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Community Answer
As shown in the figure below, an ellipsoidal cavity is carved within a...
Option A is correct because the surface of a conductor is an equipotential surface
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As shown in the figure below, an ellipsoidal cavity is carved within a perfect conductor. A positive charge Q is placed at the centre of the cavity. If points A and b are shown on the cavity surface (see figure), then which among the following choices is correct?a)Potential at A = Potential at Bb)Charge density at A = Charge density at Bc)Electric field near A = Electric field near Bd)Total electric flux at the surface of the cavity = zeroCorrect answer is option 'A'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about As shown in the figure below, an ellipsoidal cavity is carved within a perfect conductor. A positive charge Q is placed at the centre of the cavity. If points A and b are shown on the cavity surface (see figure), then which among the following choices is correct?a)Potential at A = Potential at Bb)Charge density at A = Charge density at Bc)Electric field near A = Electric field near Bd)Total electric flux at the surface of the cavity = zeroCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for As shown in the figure below, an ellipsoidal cavity is carved within a perfect conductor. A positive charge Q is placed at the centre of the cavity. If points A and b are shown on the cavity surface (see figure), then which among the following choices is correct?a)Potential at A = Potential at Bb)Charge density at A = Charge density at Bc)Electric field near A = Electric field near Bd)Total electric flux at the surface of the cavity = zeroCorrect answer is option 'A'. Can you explain this answer?.
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