WAEC Physics questions: Capacitors

10 questions with answers and explanations. Tap an option to check yourself.

1. Question 1· Capacitors· WAEC

   The unit of capacitance is the

   • Afarad
   • Bcoulomb
   • Chenry
   • Dvolt

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2. Question 2· Capacitors· WAEC

   Capacitors of 3 μF and 6 μF are connected in series. Find the combined capacitance.

   • A2 μF
   • B9 μF
   • C4.5 μF
   • D18 μF

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3. Question 3· Capacitors· WAEC

   A charged capacitor stores energy in

   • Aits connecting wires
   • Bthe electric field between its plates
   • Ca magnetic field
   • Dthe battery

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4. Question 4· Capacitors· WAEC

   A 10 μF capacitor charged to 100 V stores energy of

   • A0.5 J
   • B0.05 J
   • C1,000 J
   • D0.1 J

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5. Question 5· Capacitors· WAEC

   The charge on a 5 μF capacitor at 20 V is

   • A25 C
   • B4 × 10⁻⁶ C
   • C100 C
   • D1 × 10⁻⁴ C

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6. Question 6· Capacitors· WAEC

   Two 4 μF capacitors in series have an effective capacitance of

   • A2 μF
   • B8 μF
   • C4 μF
   • D16 μF

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7. Question 7· Capacitors· WAEC

   Capacitors of 4 μF and 12 μF are connected in series. Find their combined capacitance.

   • A3 μF
   • B16 μF
   • C8 μF
   • D48 μF

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8. Question 8· Capacitors· WAEC

   A 4 μF capacitor is charged to 100 V. How much energy does it store?

   • A2 × 10⁻⁴ J
   • B0.04 J
   • C200 J
   • D0.02 J

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9. Question 9· Capacitors· WAEC

   A capacitor stores 60 μC when charged to 12 V. Find its capacitance.

   • A72 μF
   • B720 μF
   • C0.2 μF
   • D5 μF

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10. Question 10· Capacitors· WAEC

    A capacitor stores a charge of 0.002 C at 50 V. Find its capacitance.

    • A2.5 × 10⁴ F
    • B0.1 F
    • C4 × 10⁻⁵ F
    • D4 × 10⁻³ F

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