Capacitors and Stored Energy Concepts

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

• E = 1/2 * C * I^2

• E = C * V^2 / 2

• E = C * V

• E = 1/2 * C * V^2

What happens to the energy stored in a capacitor when the voltage is doubled?

• The energy stored in the capacitor quadruples.

• The energy stored in the capacitor doubles.

• The energy stored in the capacitor remains the same.

• The energy stored in the capacitor decreases by half.

If two capacitors are in series, how is the total capacitance calculated?

• C_total = C1 + C2

• C_total = 1 / (1/C1 + 1/C2)

• C_total = C1 - C2

• C_total = C1 * C2

What is the equivalent capacitance of three capacitors in series with values 2μF, 3μF, and 6μF?

• 4μF

• 7μF

• 5μF

• 1μF

How does the total capacitance change when capacitors are added in series?

• The total capacitance increases when capacitors are added in series.

• The total capacitance is equal to the sum of the individual capacitances when in series.

• The total capacitance remains the same when capacitors are added in series.

• The total capacitance decreases when capacitors are added in series.

What is the formula for the equivalent capacitance of capacitors in parallel?

• C_eq = C_1 + C_2 + C_3 + ... + C_n

• C_eq = 1/(1/C_1 + 1/C_2 + 1/C_3 + ... + 1/C_n)

• C_eq = C_1 - C_2 - C_3 - ... - C_n

• C_eq = C_1 * C_2 * C_3 * ... * C_n

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

• 2μF

• 12μF

• 10μF

• 8μF

What effect does a dielectric material have on the capacitance of a capacitor?

• A dielectric material increases the capacitance of a capacitor.

• A dielectric material has no effect on the capacitance of a capacitor.

• A dielectric material decreases the capacitance of a capacitor.

• A dielectric material only affects the voltage across the capacitor.

What is the relationship between the dielectric strength and the maximum voltage a capacitor can handle?

• Dielectric strength is unrelated to voltage ratings.

• The maximum voltage a capacitor can handle is limited by the dielectric strength of its insulating material.

• Capacitors can handle any voltage regardless of dielectric strength.

• Higher dielectric strength allows for lower maximum voltage.

What happens to the stored energy in a capacitor when a dielectric is inserted?

• The stored energy in a capacitor decreases when a dielectric is inserted.

• The stored energy in a capacitor increases when a dielectric is inserted.

• The stored energy in a capacitor remains the same when a dielectric is inserted.

• The stored energy in a capacitor is completely discharged when a dielectric is inserted.