Physical Features That Determine Capacitance

Question 1 of 8

1

Select from the dropdown lists to complete the text.

The independent variable is ( the number of cups, the measured capacitance ); therefore, this variable is best plotted on ( the horizontal axis, the vertical axis, either axis ). The dependent variable is ( the number of cups, the measured capacitance ); therefore, this variable is best plotted ( on the horizontal axis, on the verical axis, on either axis ).

Explanation

Question 2 of 8

1

What relationship between number of cups and capacitance does the graph illustrate?

Select one of the following:

Capacitance is proportional to the spacing between plates
Capacitance increases as the spacing between plates increases, although not proportionally
Capacitance decreases as the spacing between plates increases
There is not a predictable relationship between capacitance and spacing between plates

Explanation

Question 3 of 8

1

A parallel plate capacitor has plates with area A, separation distance, d, and dielectric filling the space between the plates, resulting in capacitance C.
Which statement below correctly describes the resulting capacitance if the plate separation distance is doubled?

Select one of the following:

2C
C
C/2
C/4

Explanation

Question 4 of 8

1

Rank the parallel plate capacitors shown, from largest to smallest capacitance.
Equivalent capacitance is denoted by an equal sign.

Select one of the following:

Y > Z > W > X
X > Z = W > Y
Y > W = Z > X
X > W > Z > Y

Explanation

Question 5 of 8

1

Which of the following would definitely increase the capacitance of a parallel plate capacitor? Select TWO.

Select one or more of the following:

Increase plate area and decrease the distance between the plates.
Increase plate area and increase the distance between the plates.
Insert material with a greater dielectric constant between the plates and increase the distance between the plates.
Insert material with a greater dielectric constant between the plates and increase the plate area.

Explanation

Question 6 of 8

1

Two parallel plates separated by 0.002 m have a capacitance of 3.5 pF. If there is air between the plates and
κ=1, find the surface area of each plate.

Select one of the following:

7.9 x 10^-4 m^2
6.2 x 10^-26 m^2
1.5 x 10^-20 m^2
1.2 x 10^3 m^2

Explanation

Question 7 of 8

1

Two parallel plate capacitors, a switch, and an ideal battery are placed in a series circuit as shown.
The potential difference across each capacitor satisfies which of the following relationships?
(There are TWO correct answers.)

Select one or more of the following:

The sum of the magnitudes of the potential differences across the two capacitors is equal to the magnitude of the potential difference across the battery when the switch is closed.
The potential differences across the two capacitors are equal regardless of their capacitances since they are in series with each other.
The potential difference will be smallest across the capacitor with the largest capacitance.
The potential difference across each capacitor will be inversely proportional to the charge stored on each capacitor.

Explanation

Question 8 of 8

1

A parallel plate capacitor has square plates with side lengths of 2 x 10^−3 m separated by 1x 10^−4 m.
The dielectric constant is 5.8.
What is the value of the capacitance?

Select one of the following:

2 picofarads
2 microfarads
0.5 picofarads
0.5 microfarads

	Created by Jeffrey Piggott over 7 years ago

A Level quiz on physical features that determine capacitance.

Physical Features That Determine Capacitance

Physical Features That Determine Capacitance

Question 1 of 8

Select from the dropdown lists to complete the text.

Explanation

Question 2 of 8

What relationship between number of cups and capacitance does the graph illustrate?

Select one of the following:

Explanation

Question 3 of 8

A parallel plate capacitor has plates with area A, separation distance, d, and dielectric filling the space between the plates, resulting in capacitance C. Which statement below correctly describes the resulting capacitance if the plate separation distance is doubled?

Select one of the following:

Explanation

Question 4 of 8

Rank the parallel plate capacitors shown, from largest to smallest capacitance. Equivalent capacitance is denoted by an equal sign.

Select one of the following:

Explanation

Question 5 of 8

Which of the following would definitely increase the capacitance of a parallel plate capacitor? Select TWO.

Select one or more of the following:

Explanation

Question 6 of 8

Two parallel plates separated by 0.002 m have a capacitance of 3.5 pF. If there is air between the plates and κ=1, find the surface area of each plate.

Select one of the following:

Explanation

Question 7 of 8

Two parallel plate capacitors, a switch, and an ideal battery are placed in a series circuit as shown. The potential difference across each capacitor satisfies which of the following relationships? (There are TWO correct answers.)

Select one or more of the following:

Explanation

Question 8 of 8

A parallel plate capacitor has square plates with side lengths of 2 x 10^−3 m separated by 1x 10^−4 m. The dielectric constant is 5.8. What is the value of the capacitance?

Select one of the following:

Explanation

A parallel plate capacitor has plates with area A, separation distance, d, and dielectric filling the space between the plates, resulting in capacitance C.
Which statement below correctly describes the resulting capacitance if the plate separation distance is doubled?

Rank the parallel plate capacitors shown, from largest to smallest capacitance.
Equivalent capacitance is denoted by an equal sign.

Two parallel plates separated by 0.002 m have a capacitance of 3.5 pF. If there is air between the plates and
κ=1, find the surface area of each plate.

Two parallel plate capacitors, a switch, and an ideal battery are placed in a series circuit as shown.
The potential difference across each capacitor satisfies which of the following relationships?
(There are TWO correct answers.)

A parallel plate capacitor has square plates with side lengths of 2 x 10^−3 m separated by 1x 10^−4 m.
The dielectric constant is 5.8.
What is the value of the capacitance?