Discuss any inventions in history which are related to magnetism by referring to faraday disc?

Faraday invented the electromagnetic rotation.

Explanation:

Faraday invented a device called electromagnetic rotation, Faraday got a rotation with magnetic force, he used a cable, mercury, and a magnet.

The cable would rotate around the magnet, this would be a beginning for the electromagnetic technology.

For example:

The Homopolar motor or called electric motor was created for Faraday's invention.

We can find electric motor in Washing machines, fans, turbines, even in motorcycles and electric cars.

answer: i pick a

explanation:

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete