There is no DC electrical difference between any type of coaxial or shielded cable and plain wire. Ground loops at audio frequencies will be the same but at high frequencies, AC signals can propgate through the air and even the vacuum of space.
Have you read the linked article yet? It does describe what shielding does and how it works in fairly simple terms. I do know how noisy and RF-prone unshielded cables(plain stranded wire) can be though. Once, when every dude cruised around town with a souped-up CB radio blasting away, I'd be listening to music and suddenly some little jerk is screaming profanities at me through the audio speakers - that's RFI and often easily fixed by grounding the audio lead shields at home, but not so simple on the road.
Essentially, the grounded shield works by trapping the tiny injection of RF energy and shorting it out by providing a low impedance path to ground rather than have it mix with the audio signal and enter the amplifier.
Have you read the linked article yet? It does describe what shielding does and how it works in fairly simple terms. I do know how noisy and RF-prone unshielded cables(plain stranded wire) can be though. Once, when every dude cruised around town with a souped-up CB radio blasting away, I'd be listening to music and suddenly some little jerk is screaming profanities at me through the audio speakers - that's RFI and often easily fixed by grounding the audio lead shields at home, but not so simple on the road.
Essentially, the grounded shield works by trapping the tiny injection of RF energy and shorting it out by providing a low impedance path to ground rather than have it mix with the audio signal and enter the amplifier.
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