Gce Model Questions Vol1 2021 Physics Question 22

Practice objective / multiple choice question 22 from the 2021 Gce Model Questions Vol1 Physics examination.

Gce Model Questions Vol1 2021 Physics Objective / Multiple Choice Hard Difficulty
Question 22 GCE_MODEL_QUESTIONS_VOL1 • 2021 • PHYSICS • objective

Three point charges are fixed in the xy‑plane: \(q_1 = +8\;\mu\text{C}\) at the origin \((0,0)\), \(q_2 = -2\;\mu\text{C}\) at \((0.12\;\text{m},0)\) and \(q_3 = +5\;\mu\text{C}\) at \((0,0.15\;\text{m})\). Determine the magnitude and direction (angle measured from the positive x‑axis) of the resultant electric field at the point \(P(0.12\;\text{m},0.15\;\text{m})\). Also give the electric potential at \(P\) relative to infinity. Use \(k = 8.99\times10^{9}\;\text{N·m}^2\text{C}^{-2}\).

Answer Options

Correct Answer A. E = 4.4×10⁶ N·C⁻¹, direction 9.5° above +x‑axis; V = 6.3×10⁵ V
B. E = 5.1×10⁶ N·C⁻¹, direction 7.2° above +x‑axis; V = 7.0×10⁵ V
C. E = 3.9×10⁶ N·C⁻¹, direction 12.0° above +x‑axis; V = 5.8×10⁵ V
D. E = 4.4×10⁶ N·C⁻¹, direction 15.3° above +x‑axis; V = 6.3×10⁵ V
Correct Answer
A
Correct Option:
E = 4.4×10⁶ N·C⁻¹, direction 9.5° above +x‑axis; V = 6.3×10⁵ V

About This Question

This is Gce Model Questions Vol1 2021 Physics Question 22. It is one of the objective questions from the 2021 Gce Model Questions Vol1 Physics examination.

Difficulty level: Hard .

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