WAEC Physics 2020 Objective — Question 45
Question 45 of 50 from the West African Examinations Council (WAEC) Physics 2020 Objective paper, with the correct answer and a full explanation.
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Which of the following actions would increase the electric force between two positively charged particles? A. Decreasing the mass of the particles B. Decreasing the distance between the particles C. Increasing the distance between the particles D. Increasing the mass of the particles
- A. Decreasing the mass of the particles
- B. Decreasing the distance between the particlesCorrect
- C. Increasing the distance between the particles
- D. Increasing the mass of the particles
Explanation
Since F=kq1q2/r^2, F is proportional to 1/r^2. Thus, decreasing the distance between the particles will increase the electric force between them.
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