Gce Model Questions Vol1 2024 Physics Question 3

Practice objective / multiple choice question 3 from the 2024 Gce Model Questions Vol1 Physics examination.

Gce Model Questions Vol1 2024 Physics Objective / Multiple Choice Hard Difficulty
Question 3 GCE_MODEL_QUESTIONS_VOL1 • 2024 • PHYSICS • objective

Three identical point charges \(q=1\ \mu\text{C}\) are placed at the vertices of a triangle whose perimeter is fixed at \(P=0.30\ \text{m}\). Determine the shape of the triangle that minimises the total electrostatic potential energy of the system and calculate that minimum energy.

Answer Options

A. Isosceles triangle (base 0.12 m, equal sides 0.09 m); minimum energy ≈ 0.31 J
B. Equilateral triangle (side 0.09 m); minimum energy ≈ 0.22 J
Correct Answer C. Equilateral triangle (side 0.10 m); minimum energy ≈ 0.27 J
D. Right‑angled triangle (legs 0.10 m, hypotenuse 0.10 m); minimum energy ≈ 0.24 J
Correct Answer
C
Correct Option:
Equilateral triangle (side 0.10 m); minimum energy ≈ 0.27 J

About This Question

This is Gce Model Questions Vol1 2024 Physics Question 3. It is one of the objective questions from the 2024 Gce Model Questions Vol1 Physics examination.

Difficulty level: Hard .

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