17 Questions
What is the SI unit for the electric field?
Newton/Coulomb (N/C)
What is the formula to calculate the magnitude of the electric field between the plates of a capacitor?
$\frac{QE}{A}$
In the sample problem provided, what is the plate area of the parallel capacitor?
$0.02 , m^2$
What happens to the magnitude of the electric field between capacitor plates if the plate area increases?
Increases
If the plate separation of a capacitor is doubled while keeping other factors constant, what effect does this have on the electric field magnitude?
Halves
What is the main function of a capacitor?
Store potential energy in an electric field
What are the requirements for creating a capacitor?
Two conducting plates separated by a dielectric
In a capacitor, when one plate carries a positive charge, what charge does the other plate carry?
Negative charge
What role do insulators like paper, plastic (Teflon), or rubber play in capacitors?
Block the flow of electric charges
What does the term 'capacitance' refer to in electrical circuits?
The ability to store energy in the form of electrical charge
How does the electric field in a capacitor affect the electrons in the wire near the conducting plates?
Causes the electrons to move onto the plates
What is the SI unit for capacitance?
Farad
What is the formula for calculating the capacitance of a parallel plate capacitor without a dielectric material?
$\frac{A}{\epsilon_0 \cdot d}$
In the context of capacitance, what does the term 'plate separation' refer to?
The distance between the plates of the capacitor
How does introducing a dielectric material affect the capacitance of a parallel plate capacitor?
Increases the capacitance
If the plate area of a parallel plate capacitor is doubled while keeping other factors constant, how does this change affect the capacitance?
Doubles
What quantity must be known in order to calculate the capacitance of a parallel plate capacitor?
Plate area and plate separation
Learn how to calculate the magnitude of the electric field in the space between the capacitor using the formula 𝐸 = 𝑄/(𝜺₀𝐴). Practice solving problems involving parallel capacitors with given plate area, plate separation, and total charge.
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