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two infinitely long parallel wires?

Vay
in Chemistry

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I was reading the book "General Chemistry" by Linus Pauling and i stumbled upon a confusing part where it explains the IS units of coulomb.

The book explained Coulomb; "The coulomb is one-ampere second, and the ampere is defined as the current in each of two infinitely long parallel wires 1 meter apart that causes an electromagnetic force of 2 x 10^-7 newton per meter of its length to act on each wire." as quoted from the book.

 

This definition i did not just get from the book, i searched up online and the other sources also said infinitely long parallel lines.

 

I am confused at the "infinitely" long parallel wire part.

What is this infinitely long parallel wire? Are infinitely long parallel wires even possible?:confused:

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