1. How much charge (Q) is stored in a 5uF capacitor connected across a 70V supply?
2. How much charge (Q) is stored in a 20uF capacitor connected across a 70V supply?
3. For a constant supply voltage and an increasing value of capacitance, what is the effect on the amount of charge (Q)? Explain your reasoning.
4. For a constant supply voltage and a decreasing value of capacitance, what is the effect on the amount of charge (Q)?
5. For 50kV applied across a 250pF capacitor, what is the stored energy?
6. For a fixed frequency of f= 200Hz and the values of C below, determine Xc:
a. C = 1.0uF Xc= ?
b. C = 0.5uF Xe = ?
c. C = 0.2uF Xc = ?
d. C = 0.1uF ?
7. Determine the following:
a. XcT for two capacitors in series with the values Xci = 300ohms and Xc2 = 400ohms
b. Xcal for three capacitors in parallel with the values Xci = 100ohms, Xc2 = 400ohms and Xc3 = 200ohms
8. For the circuits below, determine CEQ and CT respectively:
![2054_How much charge is stored.png](https://secure.tutorsglobe.com/CMSImages/2054_How%20much%20charge%20is%20stored.png)
For the circuit above, determine the following (express all answers in phasor form):
1. Xc
![727_How much charge is stored 1.png](https://secure.tutorsglobe.com/CMSImages/727_How%20much%20charge%20is%20stored%201.png)
2. Zor
3. Ir
4. VRI
5. VC1