Capacitors

Which side of the capacitor becomes positive when the switch is closed?
1. I
2. II
3. both sides
4. neither side
Which side of the capacitor becomes negative when the switch is closed?
1. I
2. II
3. both sides
4. neither side
When a capacitor is charging, which of the following occurs?
1. Positive charges are pulled from the negative plate to the positive plate.
2. Negative charges are pulled from the positive plate to the negative plate.
3. Charges jump across the capacitor plates.
4. Charges come from the battery to the plates of the capacitor.
What is the voltage across this capacitor before the battery is connected?
1. 0V
2. between 0V and 6v
3. 6V
4. greater than 6V
What is the voltage of the capacitor as it is charging?
1. 0V
2. between 0V and 6v
3. 6V
4. greater than 6V
What is the voltage after it is fully charged?
1. 0V
2. between 0V and 6v
3. 6V
4. greater than 6V
Which is the charge of one of the plates of this capacitor after it is fully charged?
1. 0 Coulombs
2. 2 Coulombs
3. 3 Coulombs
4. 4 Coulombs
5. 6 Coulombs
6. 8 Coulombs
7. 12 Coulombs
What is the net charge of the capacitor after it is charged?
1. 0C
2. Increasingly positive
3. Increasingly negative.
4. At a maximum.
What is the total charge of the capacitor before it is charged?
1. 0C
2. Increasingly positive
3. Increasingly negative.
4. At a maximum.
When a capacitor is discharged, what happens?
1. Voltage increases across the capacitor.
2. Charge increases across the capacitor.
3. The capacitor releases its charges and each plate returns to neutral.
4. Charges jump across the gap, neutralizing the plates of the capacitor.
After the capacitor is charged, what happens to the light bulb when the switch is opened?
1. It immediately turns off.
2. It stays on with a consistent brightness.
3. It stays on and slowly dims.
4. It slows increases in brightness.
When the capacitor is fully charged, which plate has a greater amount of charge?
1. The positive plate.
2. The negative plate.
3. They are the same.
How does the capacitance change if the area of the plates is increased?
1. Increases.
2. Decreases.
3. No change.
How does the capacitance change if the distance between the plates increases?
1. Increases.
2. Decreases.
3. No change.
How does the capacitance change if a dielectric is added between the plates?
1. Increases.
2. Decreases.
3. No change.
How does the capacitance change if the voltage across the capacitor is increased?
1. Increases.
2. Decreases.
3. No change.
When the capacitor is fully charged, what is the direction of the electric field between the capacitor plates?
1. Up
2. Down
3. Right
4. Left
After the switch is closed for a few seconds, the light bulb is unscrewed, and then the switch is reopened. What is the voltage difference across the capacitor?
1. 0V
2. Between 0V and 6V
3. 6V
4. More than 6V
If the area of the capacitor's plates is doubled, by how much does the capacitance change?
1. No change.
2. 1/4C
3. 1/2C
4. 2C
5. 4C
If the distance between the plates is doubled, by how much does the capacitance change?
1. No change.
2. 1/4C
3. 1/2C
4. 2C
5. 4C
If the area of the plates is halved, by how much does the capacitance change?
1. No change.
2. 1/4C
3. 1/2C
4. 2C
5. 4C
If the distance between the plates is halved, by how much does the capacitance change?
1. No change.
2. 1/4C
3. 1/2C
4. 2C
5. 4C
If the voltage of the battery is doubled, by how much does the capacitance change?
1. No change.
2. 1/4C
3. 1/2C
4. 2C
5. 4C
If the voltage across the capacitor is doubled, by how much does the charge held by each plate change?
1. No change.
2. 1/4Q
3. 1/2Q
4. 2Q
5. 4Q
If the voltage across the capacitor is doubled, by how much does the potential energy held by the capacitor change?
1. No change.
2. 1/4PE
3. 1/2PE
4. 2PE
5. 4PE