Unwanted inductances

Any length of wire has some inductance. As with a transmission line, the inductance of a wire increases as the frequency increases. Wire inductance is therefore more significant at radio frequencies than at audio frequencies.
In some cases, especially in radio communications equipment, the inductance of, and among, wires can become a major bugaboo. Circuits can oscillate when they should not. A receiver might respond to signals that it’s not designed to intercept. A transmitter can send out signals on unauthorized and unintended frequencies. The frequency response of any circuit can be altered, degrading the performance of the equipment.
Sometimes the effects of stray inductance are so small that they are not important; this might be the case in a stereo hi-fi set located at a distance from other electronic equipment. In some cases, stray inductance can cause life-threatening malfunctions. This might happen with certain medical devices.
The most common way to minimize stray inductance is to use coaxial cables between and among sensitive circuits or components. The shield of the cable is connected to the common ground of the apparatus.