Question

Give an example of resonance in the reception of electromagnetic waves.

Short answer

An example of resonance in the reception of electromagnetic waves is tuning in to the radio.

Step-by-step solution

Definition of Electromagnetic wave

Radio waves, infrared, visible light, ultraviolet, X-rays, and gamma rays are examples of waves conveyed by simultaneous periodic fluctuations in electric and magnetic field intensity.

Explain resonance in the reception of electromagnetic waves.

Resonance is a phenomenon in which the frequency of a wave is the same as the system's natural frequency. The frequency is referred to as resonant frequency.

The resonant frequency of an LCR circuit is

$f_0=\frac{1}{2\pi \sqrt{LC}}$

Where $f_0$is the resonant frequency, L s inductance, and C is the capacitance

Radio tuning is an example of resonance. AnLCRcircuit with variable C is included in the tuning circuit of a radio receiver. It varies until the circuit's frequency is equivalent to the frequency of another radio station.

This signal's current is at its highest, and the receiver responds to it.