Electricity and Magnetism - SS2 Physics Past Questions and Answers - page 2
11
The unit of capacitance is:
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A
Ohms
B
Volts
C
Coulombs
D
Farads
12
The formula for capacitance is given by:
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A
C = Q / V
B
C = V / Q
C
C = ε0A / d
D
C = QV
13
When the distance between the plates of a parallel-plate capacitor is halved, the capacitance:
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A
Doubles
B
Halves
C
Remains the same
D
Becomes zero
14
Capacitors in series have a total capacitance that is:
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A
Equal to the sum of the individual capacitances
B
Less than the smallest individual capacitance
C
Greater than the largest individual capacitance
D
Inversely proportional to the individual capacitances
15
The energy stored in a charged capacitor is given by:
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A
U = (1/2) CV2
B
U = (1/2) Q2
C
U = (1/2) QV
D
U = (1/2) CV
16
The dielectric material inserted between the plates of a capacitor:
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A
Increases the capacitance
B
Decreases the capacitance
C
Does not affect the capacitance
D
Makes the capacitor non-functional
17
A capacitor with a capacitance of 10 μF is connected to a voltage source of 12 V. What is the charge stored on the capacitor?
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18
Two capacitors, C₁ = 5 μF and C₂ = 10 μF, are connected in series. What is the total capacitance of the combination?
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19
Three capacitors, C₁ = 4 μF, C₂ = 6 μF, and C₃ = 8 μF, are connected in parallel. What is the total capacitance of the combination?
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20
A capacitor is charged to a voltage of 200 V and stores a charge of 50 μC. What is the capacitance of the capacitor?
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