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.
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.
How to calculate the capacitance of a parallel-plate capacitor?
- Identify the dielectric constant (κ). 2. Measure the area of one plate (A). 3. Measure the distance between plates (d). 4. Use the formula:
Steps to determine the energy stored in a capacitor?
- Determine the charge (Q) on the capacitor and the potential difference (ΔV) across it, OR determine the capacitance (C) and the potential difference (ΔV). 2. Use the formula: OR
How to calculate the electric field strength between capacitor plates?
- Determine the charge (Q) on each plate. 2. Identify the dielectric constant (κ). 3. Measure the area of one plate (A). 4. Use the formula:
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.