Understanding Capacitors

What is the primary function of a capacitor?

• To generate electricity

• To store electrical charge

• To convert AC to DC

• To amplify signals

Where is the energy stored in a capacitor?

• In the wires

• In the electric field between the plates

• In the battery

• In the dielectric material

What causes charges to move across the plates of a parallel plate capacitor?

• The dielectric material

• The electric field

• The battery

• The resistance

What is the role of the dielectric in a capacitor?

• To separate the plates and prevent charge movement

• To conduct electricity

• To decrease capacitance

• To increase resistance

What happens when a capacitor is connected to a battery?

• The capacitor discharges

• The capacitor stores energy

• The capacitor increases voltage

• The capacitor decreases current

How does the distance between capacitor plates affect capacitance?

• Distance only affects resistance

• Increasing distance increases capacitance

• Increasing distance decreases capacitance

• Distance has no effect on capacitance

What is the SI unit for capacitance?

• Farad

• Volt

• Ohm

• Coulomb

Which factor does not affect the capacitance of a capacitor?

• Color of the capacitor

• Type of dielectric material

• Distance between the plates

• Area of the plates

What is the relationship between plate area and capacitance?

• Directly proportional

• Inversely proportional

• No relationship

• Exponentially proportional

What is the dielectric constant of air?

• 10

• 100

• 1

• 0