Neco Model Questions Vol1 2021 Physics Question 24

Practice objective / multiple choice question 24 from the 2021 Neco Model Questions Vol1 Physics examination.

Neco Model Questions Vol1 2021 Physics Objective / Multiple Choice Hard Difficulty
Question 24 NECO_MODEL_QUESTIONS_VOL1 • 2021 • PHYSICS • objective

A point charge +8 µC is fixed at the origin O. A second point charge -2 µC is fixed on the positive y‑axis at \(y = 0.12\) m. (a) Find the position on the y‑axis where the net electric field is zero. (b) Determine the electric potential at that point, taking the potential to be zero at infinity. (c) Calculate the work required to bring a test charge +1 µC from infinity to that point.

Answer Options

A. Zero‑field point at y = 0.24 m; potential = 1.5×10⁵ V; work required = 0.20 J.
B. Zero‑field point at y = 0.12 m; potential = 1.5×10⁵ V; work required = 0.15 J.
C. Zero‑field point at y = 0.24 m; potential = 2.0×10⁵ V; work required = 0.15 J.
Correct Answer D. Zero‑field point at y = 0.24 m; potential = 1.5×10⁵ V; work required = 0.15 J.
Correct Answer
D
Correct Option:
Zero‑field point at y = 0.24 m; potential = 1.5×10⁵ V; work required = 0.15 J.

About This Question

This is Neco Model Questions Vol1 2021 Physics Question 24. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Physics examination.

Difficulty level: Hard .

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