
Capacitors - Factors
Quiz
•
Physics
•
12th Grade
•
Easy

Amy Webber
Used 1+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The insulating layer of a capacitor is called the
plate
conductors
dielectric
terminals
Answer explanation
The insulating layer of a capacitor is called the dielectric. It separates the conductive plates and allows the capacitor to store electrical energy without conducting current.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The capacitance of a parallel-plate capacitor can be increased by:
increasing the charge
decreasing the charge
increasing the plate separation
decreasing the plate separation
Answer explanation
The capacitance of a parallel-plate capacitor is given by C = ε(A/d), where A is the area and d is the plate separation. Decreasing the plate separation (d) increases capacitance, making it the correct choice.
3.
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
Answer explanation
The capacitance C of a parallel-plate capacitor is given by C = ε(A/d), where A is the area of the plates and d is the distance between them. This shows that C is inversely proportional to d, meaning as the distance increases, capacitance decreases.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If C is the capacitance in Farads, ϵ permittivity of the dielectric, A area of plate overlap in square meters and d distance between plates in meters, then:
C = ϵd/A
C = A/ϵd
C = ϵA/d
C = d/ϵA
Answer explanation
The capacitance C of a parallel plate capacitor is given by the formula C = ϵA/d, where ϵ is the permittivity, A is the area of overlap, and d is the distance between the plates. Thus, the correct choice is C = ϵA/d.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The following are factors affecting capacitance, except.
Dielectric in between the metal plates
Area of the metal plates
Distance of separation of the metal plates
Voltage across the metal plates
Answer explanation
Capacitance is affected by the dielectric material, area of the plates, and the distance between them. The voltage across the plates does not affect capacitance; it influences the charge stored instead.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the capacitance if the area of the plates in a parallel-plate capacitor is doubled?
It is halved
It remains the same
It is doubled
It is quadrupled
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following statements is true about the relationship between capacitance and permittivity?
Capacitance is directly proportional to permittivity
Capacitance is not affected by permittivity
Capacitance is inversely proportional to permittivity
Capacitance is exponentially related to permittivity
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