QuestenaPractice that shows what to review next
Question 247

What is the capacitance of a 20-microfarad capacitor connected in series with a 50-microfarad capacitor?

  1. 0.07 microfarads
  2. 14.3 microfaradsCorrect answer
  3. 70 microfarads
  4. 1,000 microfarads

Explanation

Capacitors in series combine by the product-over-sum rule: (20 × 50) / 70 = 14.3 microfarads. The 70-microfarad answer would be correct only for a parallel connection.

Continue with this test

Start practice
Question 247: What is the capacitance of a 20-microfarad capacitor… · FCC General Class (Element 3) · Questena