LC Oscillating Circuit Quiz

What is the primary role of the DC voltage supply in an LC oscillating circuit?

• To power the inductor

• To provide alternating current

• To charge the capacitor

• To maintain constant current

In an LC circuit, what happens when the switch is moved to position number two?

• The inductor is disconnected

• The circuit stops oscillating

• The capacitor starts charging

• The capacitor discharges and current flows

During the oscillation in an LC circuit, when is the current through the circuit at its maximum?

• When the voltage across the capacitor is zero

• When the capacitor is fully charged

• When the inductor is disconnected

• When the voltage across the capacitor is maximum

What is the phase difference between the voltage across the capacitor and the current through the inductor in an LC circuit?

• 180 degrees

• 90 degrees

• 0 degrees

• 45 degrees

What happens to the energy stored in the capacitor during the first quarter of the LC circuit cycle?

• It remains constant

• It is converted into heat

• It is transferred to the magnetic field of the inductor

• It is lost in the wires

How is the energy stored in the inductor calculated in an LC circuit?

• 1/2 C V^2

• C L I

• 1/2 L I^2

• L C V

What is the formula for calculating the period of an LC oscillating circuit?

• LC/2π

• 1/2π√(LC)

• 2π/LC

• 2π√(LC)

In an ideal LC circuit, what remains constant throughout the oscillation?

• The frequency of oscillation

• The total energy in the circuit

• The current through the inductor

• The voltage across the capacitor

What is the relationship between the period and frequency in an LC circuit?

• They are directly proportional

• They are inversely proportional

• They are unrelated

• They are equal

Which of the following is true about energy conservation in an LC circuit?

• Energy is constant and conserved

• Energy is converted to heat

• Energy is lost in the inductor

• Energy is lost in the capacitor