# What is a parallel resonant circuit?

## What is a parallel resonant circuit?

A parallel circuit consisting of inductor and capacitor in which the inductive reactance and the capacitive reactance are equal and obtain maximum impedance at the frequency at which the circuit is resonant.

## What is resonance in circuit theory?

resonance: In an electrical circuit, the condition that exists when the inductive reactance and the capacitive reactance are of equal magnitude, causing electrical energy to oscillate between the magnetic field of the inductor and the electric field of the capacitor.

What is parallel resonance circuit used for?

A parallel resonant circuit provides current magnification. A parallel resonant circuit can be used as load impedance in output circuits of RF amplifiers. Due to high impedance, the gain of amplifier is maximum at resonant frequency. Both parallel and series resonant circuits are used in induction heating.

### What is parallel and series resonance?

Series resonance refers to the resonance that occurs in circuits where capacitors and inductors are connected in series, whereas parallel resonance refers to the resonance that occurs in circuits where the capacitors and inductors are connected in parallel.

### What is parallel LCR circuit?

Parallel RLC Circuit Summary In a parallel RLC circuit containing a resistor, an inductor and a capacitor the circuit current IS is the phasor sum made up of three components, IR, IL and IC with the supply voltage common to all three. The exact opposite to XL and XC respectively.

What are the characteristics of parallel resonant circuit?

A parallel resonant circuit stores the circuit energy in the magnetic field of the inductor and the electric field of the capacitor. This energy is constantly being transferred back and forth between the inductor and the capacitor which results in zero current and energy being drawn from the supply.

#### Which refers to a parallel circuit?

The current through each element is same. The voltage across element is in proportion to it’s resistance value. The equivalent resistance is greater than any one of the resistors. The current through any one element is less than the source current.

#### What is series resonant circuit?

Series resonance is a resonance condition that usually occurs in series circuits, where the current becomes a maximum for a particular voltage. In series resonance, the current is maximum at resonant frequency. The series resonance current curve increases to a maximum at resonance then decreases as resonance is passed.

Why is resonant frequency important?

The importance of resonance is that the circuit can either absorb or dissipate the maximum amount of energy at resonance. By varying the capacitance in a circuit (connected to the antenna) the circuit can be tuned so that the resonance frequency of the circuit is equal to the desired station frequency.

## What is series and parallel RLC circuit?

In series RLC circuit, the current flowing through all the three components i.e the resistor, inductor and capacitor remains the same, but in parallel circuit, the voltage across each element remains the same and the current gets divided in each component depending upon the impedance of each component.

## Why do we need a parallel resonance circuit?

Parallel resonance or near-to-resonance circuits can be used to prevent the waste of electrical energy , which would otherwise occur while the inductor built its field or the capacitor charged and discharged. As an example, asynchronous motors waste inductive current while synchronous ones waste capacitive current.

What is the condition for parallel resonance?

Frequency at Resonance Condition in Parallel resonance Circuit. The value of inductive reactance XL = 2πfL and capacitive reactance XC = 1/2πfC can be changed by changing the supply frequency. As the frequency increases, the value of X L and consequently the value of Z L increases. As a result, there is a decrease in the magnitude of current I 2 and this I 2 current lags behind the voltage V.

### What is the parallel resonance circuit?

Parallel Resonance means when the circuit current is in phase with the applied voltage of an AC circuit containing an inductor and a capacitor connected together in parallel. Let us understand the Parallel Resonance with the help of a circuit diagram shown below:

### What is parallel vs series wiring?

The main difference between series and parallel circuits is that, in series circuits, all components are connected in series so that they all share the same current whereas, in parallel circuits, components are connected in parallel so that they all have the same potential difference between them.

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