CHAPTER 2.2 CAPACITOR, CAPACITANCE, CAPACITANCE REACTANCE, ENERGY IN CAPACITOR.

CAPACITANCE REACTANCE, XC

• Capacitance reactance is the opposition to the
flow of the current by the capacitor.

• Capacitance reactance value is inversely
proportional to the frequency of the
alternating current voltage.

• Symbol for capacitance reactance is XC and the
unit is ohm (Ω).

CAPACITANCE REACTANCE, C

EXAMPLE 2.2.9

8μF capacitor connected to the supply of 240V, 50Hz.
Calculate the value of capacitance reactance.

SOLUTION 2.2.9

EXAMPLE 2.2.10

TUTORIAL 2.2 56

1. Calculate:

2. Calculate:
3. VC

TUTORIAL 2.2 57

4. Calculate:

5. Calcula

6. Capacitor with 50μF connected with 240V power supply.
Calculate the charge and energy stored in the capacitor.

TUTORIAL 2.2 58

7. Calculate:

8. Calculate:

TUTORIAL 2.2 59

9. Calculate:
10. Calculate:

11. VC

TUTORIAL 2.2 60

12. Calculate the value of capacitor which is connected in series
with other 60μF capacitor, where the total capacitance is
15μF.

13. 2 capacitors with values 6μF and 10μF respectively,
connected in series with 200V power supply. Calculate ;
i. Total Capacitance
ii. Charge at each capacitors
iii. Voltage drop at each capacitors

14. Calculate the total capacitance (CT) which connected in series
and parallel for combination of three capacitors below:

i. 120μF, 240μF dan 360μF

TUTORIAL 2.2 61

15. A circuit wit 3 capacitors C1, C2 and C3 connected in series
with values 3μF, 4pF and 1μF respectively. If the voltage
supply is 100v, calculate:

i. Total capacitance, CT
ii. Total Charge, QT
iii. Voltage drop at C1
16. Calculate:

17. VC

TUTORIAL 2.2 62

18. Calculate:

19. Calculate:

20. VC

21.

22. A capacitor with 50μF connected to AC 115 V 60 Hz.
Calculate capacitance reactance and current flow.

TUTORIAL 2.2 63

23. A capacitor with 120μF connected with 500 V 50 Hz.
Calculate capacitance reactance and current flow.

24. A capacitor 1000μF connected to AC 20 V 50 Hz.
i. Calculate current flow
ii. What is the effect of the current if the frequency change to
1000Hz.

25. Capacitor with 8μF connected with 240V, 50Hz power
supply. Calculate the Capacitance Reactance.

TUTORIAL 2.2 64

26. Calculate:

27. Calculate:

TUTORIAL 2.2 65

28. Calculate:

29. Calculate:

TUTORIAL 2.2 66

30. Calculate:

TUTORIAL 2.2 67

31. Calculate:

TUTORIAL 2.2 68

32. Calculate:

TUTORIAL 2.2 69

33. Calculate:

TUTORIAL 2.2 70

33. Calculate:

TUTORIAL 2.2 71

34. dC

35. alculate:

REFERENCES

1. INTRODUCTION TO ELECTRICAL

CIRCUIT. ELECTRICAL HANDBOOK

2. Norazam Aliman & Mohd Ajmain Abdul

Wahab (2015). Basic Electrical

Technology 1st Edition. Muhibbah Sales &

Service, Perak, Malaysia.

3. DarulTek Basic Electric & Electricity

Powerpoint Slides

4. NOTA KULIAH JA303

TEASER & MOTIVATE VIDEO