Gce Model Questions Vol1 2023 Physics Question 26

Practice objective / multiple choice question 26 from the 2023 Gce Model Questions Vol1 Physics examination.

Gce Model Questions Vol1 2023 Physics Objective / Multiple Choice Hard Difficulty
Question 26 GCE_MODEL_QUESTIONS_VOL1 • 2023 • PHYSICS • objective

Two point charges, +8 nC at point A and -2 nC at point B, are 12.0 cm apart along a straight line. (i) Determine all positions on the line where the resultant electric field is zero. (ii) For each such position, calculate the electric potential relative to infinity. Give your answers to three significant figures.

Answer Options

A. Zero‑field positions: 8.00 cm from the +8 nC charge (between the charges) and 24.0 cm from it (12.0 cm beyond the -2 nC charge). Potentials: 5.00×10^2 V at 8 cm, 1.00×10^2 V at 24 cm.
B. Zero‑field positions: 6.00 cm from the +8 nC charge (between the charges) and 20.0 cm from it (12.0 cm beyond the -2 nC charge). Potentials: 3.60×10^2 V at 6 cm, 1.20×10^2 V at 20 cm.
Correct Answer C. Zero‑field positions: 8.00 cm from the +8 nC charge (between the charges) and 24.0 cm from it (12.0 cm beyond the -2 nC charge). Potentials: 4.50×10^2 V at 8 cm, 1.50×10^2 V at 24 cm.
D. Zero‑field positions: 9.00 cm from the +8 nC charge (between the charges) and 30.0 cm from it (12.0 cm beyond the -2 nC charge). Potentials: 5.40×10^2 V at 9 cm, 1.80×10^2 V at 30 cm.
Correct Answer
C
Correct Option:
Zero‑field positions: 8.00 cm from the +8 nC charge (between the charges) and 24.0 cm from it (12.0 cm beyond the -2 nC charge). Potentials: 4.50×10^2 V at 8 cm, 1.50×10^2 V at 24 cm.

About This Question

This is Gce Model Questions Vol1 2023 Physics Question 26. It is one of the objective questions from the 2023 Gce Model Questions Vol1 Physics examination.

Difficulty level: Hard .

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