Capacitors

What is a Capacitor?

• A device for storing electrical charge

• A device for generating electrical charge

• A device for amplifying electrical charge

• A device for reducing electrical charge

What does a Capacitor consist of?

• Two perpendicular plates separated by an insulator

• Two parallel plates separated by a conductor

• Two perpendicular plates separated by a conductor

• Two parallel plates separated by an insulator

What is the natural example of a Capacitor?

• Thunderstorm

• Volcano eruption

• Earthquake

• Tornado

What causes energy to be stored between the plates of a Capacitor?

• Absence of charges on the electrodes

• Build up of negative charges on both electrodes

• Build up of positive charges on both electrodes

• Build up of negative and positive charges on the electrodes

What happens at the first instant when the switch is closed in the Capacitor circuit?

• Power starts to flow

• Resistance starts to flow

• Voltage starts to flow

• Current starts to flow

What is the unit of measurement for Capacitance?

• Ohm

• Farad

• Watt

• Volt

What happens to the Capacitance if the distance between the plates is increased?

• It increases

• It decreases

• It remains the same

• It becomes zero

What is the effect of a dielectric material on a Capacitor?

• It decreases the capacitance

• It increases the capacitance

• It has no effect on the capacitance

• It makes the capacitor non-functional

A Capacitor

• provide a specific value of capacitance
• stores energy in a electrostatic field 
• opposes any change in voltage
• all of the above

The amount of charge that a capacitor can accept is determined by 

• It's capacity C=Q/V
• the plate area
• the dielectric thickness
• all of the above