Capacitors Dielectrics and Current
Authored by Brenna Coldren
Physics
11th - 12th Grade
Used 3+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
When capacitors in parallel (3 capacitors), the equivalent capacitance is
C = C1 + C2 + C3
C = 1/C1 + 1/C2 + 1/C3
C = QV1 + QV2 + QV3
C = QV1 + QV2 + QV3
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
When capacitors is arrange in series (3 capacitors), the equivalent capacitance C is
C = C1 + C2 + C3
1/C = 1/C1 + 1/C2 + 1/C3
C = QV1 + QV2 + QV3
C = CR1 + CR2 + CR3
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How is the capacitance of a parallel-plate capacitor affected by the area of each plate?
C is directly proportional to the area A of each plate
C is inversely proportional to the area A of each plate
C is partially proportional to the area A of each plate
C is fully proportional to the area A of each plate
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How is the capacitance of a parallel-plate capacitor affected by the distance between the plates ?
C is directly proportional to the area A of each plate
C is inversely proportional to the distance d between the plates
C is partially proportional to the area A of each plate
C is not affected by the area A of each plate
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How is the capacitance of a parallel-plate capacitor affected by filling the space between the plates with an insulator ?
C stable when the space between the plates is filled with an insulator, εr >1
C reduces when the space between the plates is filled with an insulator, εr >1
C increases when the space between the plates is filled with an insulator, εr >1
C fluctuate when the space between the plates is filled with an insulator, εr >1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the current at a given point in a circuit is 2.5 Amp, then how many electrons pass that point on the circuit in a time period of 1 minute.
Answer:
9.375 x 1020 electrons
9.375 x 1021 electrons
9.375 x 1019 electrons
9.375 x 1018 electrons
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the equation I = nAvq, what does v represent?
The speed of the electrons
The average speed of the electrons
The velocity of the electrons
The average velocity of the electrons
the fastest speed of all electrons
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