Capacitance Practice
10 problems · instant feedback · full explanations
Capacitors store charge and energy: Q = CV, E = ½CV². In series they share charge; in parallel they share voltage.
Q1.
What is the SI unit of capacitance?
Multiple choice · Easy
Q2.
A 0.01 F capacitor is charged to 2 V. How much charge is stored?
Numerical answer (C) · Easy
Q3.
How much energy is stored in a 100 µF capacitor at 12 V?
Multiple choice · Medium
Q4.
Two 6 µF capacitors in series give what equivalent capacitance?
Multiple choice · Medium
Q5.
Two 6 µF capacitors in parallel give what equivalent capacitance? (µF)
Numerical answer (µF) · Easy
Q6.
What does inserting a dielectric do to capacitance?
Multiple choice · Medium
Q7.
A 1000 Ω resistor charges a 500 µF capacitor. What is the time constant?
Numerical answer (s) · Hard
Q8.
A capacitor blocks steady direct current after it finishes charging.
True / False · Easy
Q9.
Doubling the voltage on a capacitor doubles its stored energy.
True / False · Medium
Q10.
A parallel-plate capacitor's area is doubled and plate separation halved. The capacitance:
Multiple choice · Hard