Question 40
CapacitorsA parallel plate capacitor of area 10 cm2 in vacuum has a capacitance of 10−2 μF. What is the distance between the plates? (εo = 9 × 10−12 F m−1)
- A.9 × 10−13 m
- B.9 × 10−7 m
- C.9 × 10−3 m
- D.9 × 107 m.
Show the answer and explanation
Answer: B (9 × 10−7 m)
Explanation
d = εoA/C = 9 × 10−12 × 10 × 10−4 ÷ 10−8 = 9 × 10−7 m.