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}
= 7 µF C
_{2}
= 4 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.
4.55 µF
2.0 µF
9.77 µF
20.0 µF
omit
Question 2
What is the charge on each plate of capacitor C
_{1}
if the emf of the battery is 14 volts?
3.08 µC
63.7 µC
21.2 µC
98.0 µC
omit
Question 3
What is the voltage drop across capacitor C
_{3}
?
4.6 volts
4.7 volts
9.1 volts
4.9 volts
omit
Question 4
What is the charge on capacitor C
_{2}
?
21.2 µC
19.6 µC
3.50 µC
44.1 µC
omit
Question 5
What would be the capacitance of a parallel plate capacitor where each plate has an area of 49 cm
^{2}
and the plates are separated by 4 mm?
1.08 x 10
^{-11}
F
5.42 x 10
^{-11}
F
1.73 x 10
^{-9}
F
7.22 x 10
^{-12}
F
omit
Question 6
If the capacitor in Question #5 were to be charged by a 14-V battery, how much energy would be stored in the electric field between the capacitor's plates?
1.52 x 10
^{-10}
Joules
7.08 x 10
^{-10}
Joules
5.31 x 10
^{-9}
Joules
1.06 x 10
^{-9}
Joules
omit
Question 7
In the circuit shown below, R
_{1}
has a resistance of 400 ohms, R
_{2}
has a resistance of 900 ohms, and the battery has an emf of 14 volts. What would be the voltage lost across R
_{1}
when steady state currents have been achieved?
6.22 volts
4.31 volts
7.00 volts
14.0 volts
omit
Question 8
If the capacitor has a capacitance equal to 7 µF, how muc charge would be stored on its plates when steady-state conditions have been reached?
the charge cannot be determined
67.8 µC
98.0 µC
30.2 µC
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