Neco Model Questions Vol1 2019 Physics Question 13

Practice objective / multiple choice question 13 from the 2019 Neco Model Questions Vol1 Physics examination.

Neco Model Questions Vol1 2019 Physics Objective / Multiple Choice Hard Difficulty
Question 13 NECO_MODEL_QUESTIONS_VOL1 • 2019 • PHYSICS • objective

Two point charges are placed on the vertical y‑axis. A charge \(q_1 = +8\;\mu\text{C}\) is at the origin and a charge \(q_2 = -2\;\mu\text{C}\) is at \(y = 0.12\;\text{m}\). (i) Find the position on the y‑axis where the net electric field is zero. (ii) Calculate the electric potential at that point relative to infinity. Use \(k = 9\times10^{9}\;\text{N·m}^2\!\!/\text{C}^2\) and give the potential in volts to two significant figures.

Answer Options

A. y = 0.36 m; V = 1.2×10^5 V
B. y = 0.24 m; V = 2.5×10^5 V
Correct Answer C. y = 0.24 m; V = 1.5×10^5 V
D. y = 0.08 m; V = 2.0×10^5 V
Correct Answer
C
Correct Option:
y = 0.24 m; V = 1.5×10^5 V

About This Question

This is Neco Model Questions Vol1 2019 Physics Question 13. It is one of the objective questions from the 2019 Neco Model Questions Vol1 Physics examination.

Difficulty level: Hard .

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