High frequency current passes through a wire what will happen
Answers
For higher Amp current draw thicker wire is required. eg. car audio amplifier which work on 10v-16v. It is a high wattage appliance and does a lot of work to move the speakers. If the volume is low an amplifier can do away with thinner wire. But if volume is increased , Speakers need work more, more wattage expected ,current (Ampere) drawn increased , more electrons are required. If the wire thin electrons collide and the wire gets hot . If the wire is thick more electrons can flow easily without colliding.
Consider voltage as the push that electrons feel, although speed doesnot change. Consider more volt = more muscle
If the circuit is a high volt low ampere type there is no requirement of thick wires. Eg. Stun guns that security forces carry have very thin wires that carry high volt to stun criminals but low on current so that damage is low. Stun guns operete at upto 500,000v but amprage is negligible(not detectable).
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So to conclude:
Car amplifier : 12v , 80Amp - Low voltage High Current hence thicker wires so that a lot of electrons can flow.
Stun gun : 500,000v , negligible Ampere - High volt Low current hence thin wires will do because too much electron flow can kill the target.
As far I understand, higher wattage appliances require thicker wires for a given voltage.