Crossword-Solution: IMPEDANCE 9 letters, 8 clues 🏆 scrabble score: 16

HEADPHONES AND LOUD SPEAKERS Wireless Headphones--How a Bell Telephone Receiver is Made--How a Wireless Headphone is Made--About Resistance, Turns of Wire and Sensitivity of Headphones--The Impedance of Headphones--How the Headphones Work--About Loud Speakers--The Simplest Type of Loud Speaker--Another Simple Kind of Loud Speaker--A Third Kind of Simple Loud Speaker--A Super Loud Speaker.

Where a wire is wound in a coil the impedance of the circuit is increased and where an alternating current is used the impedance grows greater as the frequency gets higher.

The impedance of the magnet coils of a receiver is so great for high frequency oscillations that the latter cannot pass through them; in other words, they are choked off.

Its value is the square root of the sum of the squares of the resistance and reactance, or, Z being impedance, ------------------------- / 1 Z = / R^{2} + ---------------- \/ C^{2}[omega]^{2} and -------------------------- Z = / R^{2} + L^{2}[omega]^{2} \/ the symbols meaning as before.

This is the condition which ordinarily exists and which results in the removal of the resistance and the impedance on the armature winding from any circuit in which the generator is placed, as long as the generator is not operated.