At audio frequencies (below 20khz), electromagnetic waves have very wavelengths. the wavelength is typically much larger than the length of any of the wires in the circuit used. an exception would be long or lines. (hint: pots and 60hz). when wavelength is much shorter than the wire lengths, the basic rules of electronic circuits apply and theory is not necessary.

broad, transmission or power lines, electrical circuit theory

Explanation:

Electromagnetic waves have quite broad wavelengths for audio frequencies. Normally, the wavelength is larger than any of wires used in circuit. Long transmission or power line might be an exception. If the wavelength is much smaller than length of a wire, the basic principles of electronic circuits apply and the principle of electrical circuits is not needed

For wavelength much smaller than length of wire given, the given elements behave as distributed element, so for this condition Maxwell equation is apply

the correct answer is c.stops after infancy and childhood.

myelin is the substance of the central nervous system (cns) that insulates nerve cell axons to increase the speed at which nerve impulse travels. myelination is a process of myelin formation. this process occurs postnatally, begins in the embryo during the midst of early development and finishes after birth.