How are oscillations produced using an inductor and a capacitor?

How are oscillations produced using an inductor and a capacitor?

A circuit containing both an inductor (L) and a capacitor (C) can oscillate without a source of emf by shifting the energy stored in the circuit between the electric and magnetic fields. When the switch is closed, the capacitor begins to discharge, producing a current in the circuit.

Why does an LC circuit produce oscillations?

An LC circuit, oscillating at its natural resonant frequency, can store electrical energy. Due to Faraday’s law, the EMF which drives the current is caused by a decrease in the magnetic field, thus the energy required to charge the capacitor is extracted from the magnetic field.

Why LC oscillations are not realistic?

Answer: L-C oscillations are not realistics because and element whether its an inductor or capacitor have some lossy element i.e. resistance. An inductor is made of coil and coil have some resistance same capacitor is also have some resistance. So practically L-C oscillations will not occur for intinite time.

Why can’t we use LC oscillator for low frequency oscillations?

and if we want to design a oscillator for low frequency we have to choose the values of inductor and capacitor to be large . As we know large value capacitors are bulky and costly and hence they aren’t used. This is the reason why we won’t use LC oscillator for lower​ frequency.

How does an inductor and capacitor circuit oscillate?

A circuit containing both an inductor () and a capacitor () can oscillate without a source of emf by shifting the energy stored in the circuit between the electric and magnetic fields.

When does energy return to capacitor in LC circuit?

When fully charged, the capacitor once again transfers its energy to the inductor until it is again completely discharged, as shown in Figure 11.5.1 (d). Then, in the last part of this cyclic process, energy flows back to the capacitor, and the initial state of the circuit is restored.

How does a magnetic field affect a capacitor?

The current, in turn, creates a magnetic field in the inductor. The net effect of this process is a transfer of energy from the capacitor, with its diminishing electric field, to the inductor, with its increasing magnetic field. Figure 11.5.1 (a–d) The oscillation of charge storage with changing directions of current in an circuit.

Why does current continue to flow in a capacitor?

After reaching its maximum , the current continues to transport charge between the capacitor plates, thereby recharging the capacitor. Since the inductor resists a change in current, current continues to flow, even though the capacitor is discharged. This continued current causes the capacitor to charge with opposite polarity.