Neco 2020 Physics Question 28

Practice objective / multiple choice question 28 from the 2020 Neco Physics examination.

Neco 2020 Physics Objective / Multiple Choice Hard Difficulty

Question 28 NECO • 2020 • PHYSICS • objective

On the x‑axis, a point charge \(+8\;\mu\text{C}\) is placed at the origin and a charge \(-2\;\mu\text{C}\) at \(x = 0.12\;\text{m}\). (a) Determine the position on the axis where the net electric field is zero. (b) Calculate the electric potential at that point (take the potential at infinity as zero). Use \(k = 9\times10^{9}\;\text{N m}^{2}\text{C}^{-2}\).

A. x = 0.08 m, V = 5.0×10^{4} V

B. x = 0.48 m, V = 7.5×10^{4} V

C. x = 0.16 m, V = 2.0×10^{5} V

Correct Answer D. x = 0.24 m, V = 1.5×10^{5} V

Correct Answer

Correct Option:

x = 0.24 m, V = 1.5×10^{5} V

This is Neco 2020 Physics Question 28. It is one of the objective questions from the 2020 Neco Physics examination.

Difficulty level: Hard .

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