WAEC Physics 2020 Objective — Question 5
Question 5 of 50 from the West African Examinations Council (WAEC) Physics 2020 Objective paper, with the correct answer and a full explanation.
Advertisement
How would the capacitance of a parallel plate capacitor be affected if the distance of separation of its plates is decreased? It will
- A. increase in valueCorrect
- B. decrease slightly
- C. remain unchanged
- D. drop to zero
Explanation
For a parallel plate capacitor, the capacitance depends on the geometry of the plates: C = (epsilon)A/d, where A=area of plates, d=distance between plates. Decreasing d increases the capacitance since capacitance is inversely proportional to plate separation.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.