Practice Problems
Resistors and Capacitors
Directions:
On this worksheet you will review the formulas and relationships for capacitors wired in series and in parallel and well as capacitors in DC circuits.
omit
Question 1
In the circuit shown below, the values for each capacitor are:
C
_{1}
= 4 µF C
_{2}
= 5 µF C
_{3}
= 9 µF;
Based on these values, what would be the total capacitance of this combination?
This diagram is only referenced in Questions 1-4.
18.0 µF
7.21 µF
3.11 µF
1.8 µF
omit
Question 2
What is the charge on each plate of capacitor C
_{1}
if the emf of the battery is 10 volts?
10.4 µC
31.1 µC
40.0 µC
3.21 µC
omit
Question 3
What is the voltage drop across capacitor C
_{3}
?
7.8 volts
3.9 volts
3.3 volts
2.2 volts
omit
Question 4
What is the charge on capacitor C
_{2}
?
11.1 µC
20.0 µC
10.4 µC
2.00 µC
omit
Question 5
What would be the capacitance of a parallel plate capacitor where each plate has an area of 25 cm
^{2}
and the plates are separated by 5 mm?
2.21 x 10
^{-11}
F
1.77 x 10
^{-11}
F
1.11 x 10
^{-9}
F
4.43 x 10
^{-12}
F
omit
Question 6
If the capacitor in Question #5 were to be charged by a 10-V battery, how much energy would be stored in the electric field between the capacitor's plates?
8.85 x 10
^{-10}
Joules
2.21 x 10
^{-10}
Joules
4.43 x 10
^{-11}
Joules
1.11 x 10
^{-9}
Joules
omit
Question 7
In the circuit shown below, R
_{1}
has a resistance of 500 ohms, R
_{2}
has a resistance of 900 ohms, and the battery has an emf of 10 volts. What would be the voltage lost across R
_{1}
when steady state currents have been achieved?
10.0 volts
5.00 volts
5.56 volts
3.57 volts
omit
Question 8
If the capacitor has a capacitance equal to 4 µF, how muc charge would be stored on its plates when steady-state conditions have been reached?
the charge cannot be determined
14.3 µC
25.7 µC
40.0 µC
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