What is the capacitance of a 20-microfarad capacitor connected in series with a 50-microfarad capacitor?
0.07 microfarads
14.3 microfarads✓الإجابة الصحيحة
70 microfarads
1,000 microfarads
الشرح
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.