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Class 12 › Physics › Electric Charge and Field
CBSE2024Class Class 12 · Physics1 Marks · Mcq✅ Verified
Three point charges are placed at the corners of an equilateral triangle. Assuming only electrostatic forces are acting, the system:
A. Can never be in equilibrium
B. Will be in equilibrium if charges rotate about the centre of the triangle
C. Will be in equilibrium if charges have same magnitude but different signs
D. Will be in equilibrium if charges have different magnitudes and different signs
✅ Answer & Solution
✅ Correct Answer: A
<b>Concept:</b> Stability of charge configuration in 2D.<br><br><br><br><b>Explanation:</b><br>When three point charges are placed at the corners of an equilateral triangle, electrostatic forces act on each charge.<br><br>The net force on each charge cannot be zero simultaneously under all conditions.<br><br>Hence the system can <b>never be in equilibrium</b> under electrostatic forces alone.<br><br><b>Answer:</b> Option (A) Can never be in equilibrium
