Capacitors

What is the function of a capacitor in an electronic circuit?

• Amplify sound

• Store electric charge

• Generate heat

• Control light intensity

What is the symbol used to represent a capacitor?

• D

• A

• B

• C

What is the SI unit of capacitance?

• Ohm

• Volt

• Henry

• Farad

In a parallel-plate capacitor, what happens to the capacitance when the plate area is increased?

• Increases

• Remains the same

• Decreases

• Becomes zero

What is the physical constant ε0 commonly referred to as?

• Thermal conductivity

• Magnetic flux

• Electric resistance

• Vacuum permittivity

In a series combination of capacitors, what happens to the equivalent capacitance compared to individual capacitances?

• Zero

• Equal to the sum

• Greater than the sum

• Less than the sum

What is the energy stored in a charged capacitor proportional to?

• Charge

• Voltage

• Voltage squared

• Charge squared

What is the purpose of using a dielectric in a capacitor?

• Reduce charge

• Increase resistance

• Decrease capacitance

• Prevent breakdown

What is the maximum electric field a material can tolerate without breaking down called?

• Insulator strength

• Dielectric strength

• Dielectric constant

• Permittivity

What happens to the capacitance when a dielectric completely fills the region between the plates of a capacitor?

• Becomes zero

• Remains the same

• Decreases

• Increases