Understanding Capacitance Concepts

What is the definition of capacitance?

• Capacitance is the ability of a system to store electric charge per unit voltage.

• Capacitance refers to the resistance of a material to electric flow.

• Capacitance is the measure of electric current in a circuit.

• Capacitance is the speed at which electric charge moves through a conductor.

Which unit is used to measure capacitance?

• ohm

• volt

• watt

• farad

What happens to the total capacitance when capacitors are connected in series?

• The total capacitance increases.

• The total capacitance remains the same.

• The total capacitance decreases.

• The total capacitance becomes zero.

How do you calculate the total capacitance of capacitors in parallel?

• C_total = C1 * C2 * C3 * ... * Cn

• C_total = 1/(1/C1 + 1/C2 + 1/C3 + ... + 1/Cn)

• C_total = C1 - C2 - C3 - ... - Cn

• C_total = C1 + C2 + C3 + ... + Cn

What is the formula for the energy stored in a capacitor?

• E = C * V

• E = 1/2 * C * I^2

• E = 1/2 * C * V^2

• E = C * V^2 / 2

What role do dielectric materials play in capacitors?

• Dielectric materials have no effect on the performance of capacitors.

• Dielectric materials are used to conduct electricity in capacitors.

• Dielectric materials decrease capacitance and reduce charge storage in capacitors.

• Dielectric materials increase capacitance and improve charge storage in capacitors.

Which of the following is a common application of capacitors?

• Data transmission in fiber optic cables

• Power generation in renewable energy systems

• Energy storage and filtering in electronic circuits

• Mechanical support in structural engineering

What is the effect of increasing the distance between capacitor plates?

• The capacitance fluctuates randomly.

• The capacitance remains the same.

• The capacitance decreases.

• The capacitance increases.

If two capacitors of 4 µF and 6 µF are in series, what is the total capacitance?

• 2.4 µF

• 6 µF

• 10 µF

• 4 µF

What is the total capacitance of three capacitors (2 µF, 3 µF, and 5 µF) in parallel?

• 10 µF

• 8 µF

• 7 µF

• 5 µF