All Flashcards
What are the differences between capacitance with and without a dielectric?
Without Dielectric: Capacitance depends only on plate area and separation. | With Dielectric: Capacitance is increased by a factor of the dielectric constant (κ).
Compare the electric field inside a capacitor with and without a dielectric.
Without Dielectric: Electric field is solely determined by the charge and plate separation. | With Dielectric: Electric field is reduced due to the polarization of the dielectric material.
What are the differences between capacitance with and without a dielectric?
Without Dielectric: Capacitance depends only on plate area and separation. | With Dielectric: Capacitance is increased by a factor of the dielectric constant.
What are the differences between electric field inside and outside a capacitor?
Inside: Uniform, constant magnitude and direction (except near edges). | Outside: Ideally zero, but practically negligible.
What are the differences between energy storage in a capacitor and a battery?
Capacitor: Stores energy electrostatically, releases quickly. | Battery: Stores energy chemically, releases more slowly.
What are the differences between the effects of increasing plate area vs. decreasing plate separation on capacitance?
Increasing Plate Area: Increases capacitance directly. | Decreasing Plate Separation: Increases capacitance inversely.
What are the differences between the electric field with and without a dielectric?
Without Dielectric: Electric field depends on charge and plate area. | With Dielectric: Electric field is reduced due to polarization of the dielectric.
What effect does increasing plate area have on capacitance?
Increasing the plate area increases the capacitance.
What effect does decreasing plate separation have on capacitance?
Decreasing the plate separation increases the capacitance.
What happens when a dielectric material is inserted between the plates of a capacitor?
The capacitance increases, and the electric field between the plates decreases.
What happens when the voltage across a capacitor increases?
The charge stored on the capacitor increases proportionally.
What effect does increasing the charge on the plates have on the electric field?
Increasing the charge on the plates increases the electric field strength.