emoryjoshua emoryjoshua

14-10-2021
Engineering

contestada

PLEASE I NEED HELP! AND DONT FREAKING SEND A LINK! I’ve already asked this question like 3 times and no ones answered.
Find the difference of A copper wire 5 meters long with with a radius of 5mm that has a battery connected across the ends with a potential difference of 12V.
Resistivity of copper is 1.7 x 10^-8 Ω Meters
Next question is to find current (I) in the wire if it’s connected to a battery with a voltage of 12V, use ohm’s law.
What is the resistance of the wire?
What is the current in the wire?

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peter9722 peter9722

14-10-2021

Answer:

What does the difference mean exactly?

I calculated the Area to be 78.5 mm² and Resistance 0.00111465Ω for the first part. I don't understand what the question means.

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