I asked you if I need to specify the length to know the resistance of a component, say a resistor.

and you replied : '' If you were making a resistor out of a single piece of wire, yes you would. The question was asked in the context of a cable so yes. ''

''You would only need to specify those things in order to know resistance''

''Resistivity is a property of a material. It is not dependant on the dimensions. Resistance is. ''

So here we have three quotes all highlighted in red for the convenience of the forum members, which are false and/or demonstrative of his incompetence.

The first/second statement is false, since as I have already explained, ohms law gives a simple relationship which does not include length as a factor, but enables one to determine the resistance of a component based on the time derivative of charge for a given volatge v.

The third, and rather vague statement merely exemplifies his lack of knowledge in electronics.

Would you care to explain what you mean by '' resistivity is a property of a material '' ? What sort of property  ?

Please also explain to us, what you mean by '' It is not dependant on the dimensions ''.

What do you mean by dependant ?

Johnny.