Neco Model Questions Vol1 2023 Physics Question 9

Practice objective / multiple choice question 9 from the 2023 Neco Model Questions Vol1 Physics examination.

Neco Model Questions Vol1 2023 Physics Objective / Multiple Choice Hard Difficulty
Question 9 NECO_MODEL_QUESTIONS_VOL1 • 2023 • PHYSICS • objective

Two point charges are placed in air: q₁ = +5 µC at the origin O, and q₂ = -3 µC at the point (0, 0.04 m) on the y‑axis. (i) Determine the magnitude and direction of the net electric field at point P (0.03 m, 0). (ii) A test charge q = +2 µC is moved from P to point Q (0, 0.05 m) along the straight line joining them. Calculate the work done by the electric field on the test charge. (iii) Find the potential difference V_P - V_Q between the two points.

Answer Options

Correct Answer A. E ≈ 4.44×10⁷ N C⁻¹ at 11.3° above +x; Work = 5.52 J; V_P‑V_Q = 2.76×10⁶ V
B. E ≈ 4.44×10⁷ N C⁻¹ at 15.0° above +x; Work = 5.52 J; V_P‑V_Q = 3.00×10⁶ V
C. E ≈ 3.90×10⁷ N C⁻¹ at 9.5° above +x; Work = 4.80 J; V_P‑V_Q = 2.30×10⁶ V
D. E ≈ 5.10×10⁷ N C⁻¹ at 13.0° above +x; Work = 6.20 J; V_P‑V_Q = 3.10×10⁶ V
Correct Answer
A
Correct Option:
E ≈ 4.44×10⁷ N C⁻¹ at 11.3° above +x; Work = 5.52 J; V_P‑V_Q = 2.76×10⁶ V

About This Question

This is Neco Model Questions Vol1 2023 Physics Question 9. It is one of the objective questions from the 2023 Neco Model Questions Vol1 Physics examination.

Difficulty level: Hard .

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