9643019
Descripción
Test por Jeffrey Piggott, actualizado hace más de 1 año
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Creado por Jeffrey Piggott
hace más de 7 años
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Pregunta 1
Pregunta
The independent variable is [blank_start]the number of cups[blank_end]; therefore, this variable is best plotted on [blank_start]space[blank_end]. The dependent variable is [blank_start]space[blank_end]; therefore, this variable is best plotted [blank_start]space[blank_end].
Respuesta
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the number of cups
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the measured capacitance
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the horizontal axis
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the vertical axis
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either axis
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the number of cups
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the measured capacitance
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on the horizontal axis
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on the verical axis
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on either axis
Pregunta 2
Pregunta
What relationship between number of cups and capacitance does the graph illustrate?
Respuesta
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Capacitance is proportional to the spacing between plates
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Capacitance increases as the spacing between plates increases, although not proportionally
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Capacitance decreases as the spacing between plates increases
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There is not a predictable relationship between capacitance and spacing between plates
Pregunta 3
Pregunta
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?
Respuesta
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2C
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C
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C/2
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C/4
Pregunta 4
Pregunta
Rank the parallel plate capacitors shown, from largest to smallest capacitance.
Equivalent capacitance is denoted by an equal sign.
Respuesta
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Y > Z > W > X
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X > Z = W > Y
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Y > W = Z > X
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X > W > Z > Y
Pregunta 5
Pregunta
Which of the following would definitely increase the capacitance of a parallel plate capacitor? Select TWO.
Respuesta
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Increase plate area and decrease the distance between the plates.
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Increase plate area and increase the distance between the plates.
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Insert material with a greater dielectric constant between the plates and increase the distance between the plates.
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Insert material with a greater dielectric constant between the plates and increase the plate area.
Pregunta 6
Pregunta
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.
Respuesta
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7.9 x 10^-4 m^2
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6.2 x 10^-26 m^2
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1.5 x 10^-20 m^2
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1.2 x 10^3 m^2
Pregunta 7
Pregunta
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.)
Respuesta
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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.
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The potential differences across the two capacitors are equal regardless of their capacitances since they are in series with each other.
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The potential difference will be smallest across the capacitor with the largest capacitance.
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The potential difference across each capacitor will be inversely proportional to the charge stored on each capacitor.
Pregunta 8
Pregunta
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?
Respuesta
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2 picofarads
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2 microfarads
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0.5 picofarads
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0.5 microfarads
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