Understanding Parallel Plate Capacitors

This video tutorial covers the basics of parallel plate capacitors, including how to calculate the charge stored in a capacitor, determine capacitance, and understand the relationship between charge, voltage, and capacitance. It also explains how capacitors charge and discharge in circuits and how to calculate the electric field between capacitor plates.

What is the charge stored on a 5-farad capacitor when it is charged to 100 volts?

• 5 coulombs

• 1000 coulombs

• 500 coulombs

• 50 coulombs

If a capacitor stores 400 coulombs at 50 volts, what is its capacitance?

• 10 farads

• 4 farads

• 2 farads

• 8 farads

What voltage is needed to store 1000 coulombs on an 8-farad capacitor?

• 200 volts

• 100 volts

• 150 volts

• 125 volts

Which factor does NOT increase the capacitance of a parallel plate capacitor?

• Decreasing the distance between plates

• Increasing the plate area

• Increasing the voltage across the plates

• Using a material with a high dielectric constant

What is the capacitance of a parallel plate capacitor with plates of 0.3m by 0.5m separated by 0.5mm of air?

• 1.655 nanofarads

• 3.655 nanofarads

• 4.655 nanofarads

• 2.655 nanofarads

How does a battery charge a capacitor?

• By decreasing the resistance of the circuit

• By allowing electrons to flow through the insulator

• By increasing the temperature of the capacitor

• By pumping electrons from one plate to the other

What happens to the charge on a capacitor when the battery is removed?

• The charge remains indefinitely

• The charge dissipates immediately

• The charge is transferred to the battery

• The charge is released slowly over time

What is the electric field between two plates with a 9-volt potential difference and a separation of 0.5mm?

• 36,000 volts per meter

• 27,000 volts per meter

• 9,000 volts per meter

• 18,000 volts per meter

In which direction does the electric field between capacitor plates point?

• From negative to positive

• From positive to negative

• In a circular path

• It does not have a direction

What is the unit of electric field strength?

• Ohms per meter

• Farads per meter

• Coulombs per meter

• Volts per meter