Home > Microsoft > Quizzes > Electrical Engineering Practice Test: Capacitance and Capacitors
Electrical Engineering Practice Test: Capacitance and Capacitors
Fast practice, instant feedback. Timer auto-submits when time’s up.
Avg score: 100% Most missed: “A circuit has a resistance of 2 ohms connected in series with a capacitance of 6…”
Capacitance and Capacitors topics include: Capacitors, charge and voltage, capacitance, capacitors in parallel and series, electric fields, electric flux density, relative permittivity, composite dielectric capacitor, charging and discharging currents, growth and decay, CR networks transients, dielectric strength and displacement current, capacitor and capacitance types.  Capacitance is the ability of a circuit or component to store and collect energy in the form of an electrical charge. Capacitors are devices that store energy and come in many shapes and sizes.  The capacitance of a... Show more
Electrical Engineering Practice Test: Capacitance and Capacitors
Time left 00:00
25 Questions

1. Electric field terminates at ________
2. For high frequencies, capacitor acts as _________
3. What is the electric flux density in free space if the electric field intensity is 1V/m?
4. A circuit has a resistance of 2 ohms connected in series with a capacitance of 6F. Calculate the discharging time constant.
5. An 8microF capacitor is connected in series with a 0.5 megaohm resistor. The DC voltage supply is 200V. Calculate the initial charging current.
6. For which medium capacitance is high?
7. What is the value of capacitance of a capacitor which has a voltage of 4V and has 16C of charge?
8. Calculate the relative permittivity of the second dielectric if the relative permittivity of the first is 4. The electric field strength of the first dielectric is 8V/m and that of the second is 2V/m.
9. What is the relation between current and voltage in a capacitor?
10. What happens to the potential difference between the plates of a capacitor as the thickness of the dielectric slab increases?
11. Calculate the capacitance if the dielectric constant=4, area of cross section= 10m2 and the distance of separation between the plates is 5m.
12. Capacitors charge and discharge in __________ manner.
13. Two 4F capacitors are connected in series, calculate the voltage across each if the total voltage is 20V.
14. What happens to the capacitance of a multi plate capacitor when the area of cross section of the plate decreases?
15. When the voltage across a capacitor increases, what happens to the charge stored in it?
16. Calculate the voltage across the 1F capacitor.
Find the capacitors connected in series from the given diagram
17. Capacitor blocks__________ after long time.
18. If 2V is supplied to a 3F capacitor, calculate the charge stored in the capacitor.
19. Calculate the distance between the plates of the capacitor having C=20F, actual permittivity = 5F/m n=3 and A=4m2.
20. When capacitors are connected in series _______________ Varies
21. If a parallel plate capacitor of plate area 2m2 and plate separation 1m store the charge of 1.77*10-11 C. What is the voltage across the capacitor?
22. What is the voltage across a capacitor at the time of switching, that is, when t=0?
23. Which of the following expressions is correct with respect to the voltage across capacitors in series?
24. What is the value of capacitance of a capacitor which has a voltage of 4V and ha 8C of charge?
25. Calculate the voltage across the capacitor at t=0.
Find the current in circuit when switch is closed from the given diagram