WorksheetsQuiz: Capacitance and Dielectric
Total questions: 20
Worksheet time: 12mins
In charging up a capacitor, a battery does work in transferring an increment of charge from one plate of the capacitor to the other plate and will be stored as an electrical potential energy in the capacitor. Which of the following statements BEST describes work?
Work is the ratio of charges and potential difference that can be stowed inside the metal plate capacitors
Work is affected by the geometry of the plates and other factors such as dielectric constant of the material between them
Work is the density of energy that can be stored inside the capacitor
Work is equal to the product of the charge increment and the potential difference between the plates.
An empty parallel plate capacitor is connected to a battery that maintains a constant potential difference between the plates. A dielectric is inserted between the plates, what will happen to the capacitance of the system?
Increase, a dielectric material is used to higher the capacitance of the system.
Decrease, a dielectric material is used to lower the capacitance of the system
Remains the same with the value of potential difference because they are directly proportional with one another.
Remains the same with the value of potential difference because capacitance is not affected by the dielectric
A parallel plate capacitor is charged up by a battery. The battery is then disconnected, but the charge remains on the plates. The plates are then pulled apart, what will happen to the electric potential energy stored by the capacitor?
Increase, because there are still charges remain on the plates
No
Increase, because distance has not something to do with the potential energy
Decrease, because distance is inversely proportional with the electric potential energy
Decrease, because charge is inversely proportional with the electric potential energy
A. Series circuit means that the devices are connected in such a way that there is the unequal electric current through each device.
B. Series circuit means that the potential difference is different in each capacitor.
statement A alone is TRUE
statement B alone is TRUE
statements A and B are TRUE
statements A and B are FALSE
A. Parallel circuit means that there is the same potential difference in each capacitor.
B. Parallel circuit means that charges in each capacitor differ from one another.
statement A alone is TRUE
statement B alone is TRUE
statements A and B are TRUE
statements A and B are FALSE
What term is used to measure the storing ability of a capacitor?
(a)
What type of quantity is used in electromagnetism that determines the energy stored in the capacitor per given volume?
(a)
The capacitance of a capacitor is not affected by the orientation or geometry of the plates and the dielectric constant of the material between them
TRUE
FALSE
A. All electric filed lines generated by the charges on the plates of the capacitor can pass through the dielectric.
B. The higher the electric field lines passing through the plate capacitor, the lesser the potential difference.
statement A alone is TRUE
statement B alone is TRUE
statements A and B are TRUE
statements A and B are FALSE
Parallel plate capacitor consists of two parallel metal plates laced near one another but not touching. Dielectric is an insulating material that is inserted to fill the region between the conductors or plates.
TRUE
FALSE
With respect to the capacitor, which relationship is true? •
C = Q×V
V = C×Q
V = Q/C
Q = C/V
The plates of a parallel-plate capacitor are 2.50mm apart, and each carries a charge of magnitude 80.0nC. The plates are in vacuum. The electric field between the plates has a magnitude of 4.00x106V/m. What is the potential difference between the plates?
2.00x104V
1.75x104 P.D.
1.00x10-4P
1.00x104V
not solvable! because capacitor has no potential difference because it should have an insulator in between.
The plates of a parallel-plate capacitor are 2.50mm apart, and each carries a charge of magnitude 80.0nC. The plates are in vacuum. The electric field between the plates has a magnitude of 4.00x106V/m.
what is the capacitance?
zero
same as potential difference 4.00pF
8.99pF
8pF
8.00x10-9F
