Solid to liquid
Liquid to solid
By adding or removing heat energy aka thermal energy
2m/s
it has to be 20 charecters just ignore this your answer is up there
Answer:
I = 6.42 A
Explanation:
Given that,
Potential difference, V = 0.9 V
Length of the wire, l = 1.5 m
Area of cross section, ![A=0.6\ mm^2=6\times 10^{-7}\ m^2](https://tex.z-dn.net/?f=A%3D0.6%5C%20mm%5E2%3D6%5Ctimes%2010%5E%7B-7%7D%5C%20m%5E2)
We need to find the current in the wire. Let I is current. We can find it using Ohm's law as follows :
V = IR
Where R is the resistance of the wire
![I=\dfrac{V}{R}\\\\I=\dfrac{V}{\rho \dfrac{l}{A}}\\\\I=\dfrac{0.9}{5.6\times 10^{-8}\times \dfrac{1.5}{6\times 10^{-7}}}\\\\I=6.42\ A](https://tex.z-dn.net/?f=I%3D%5Cdfrac%7BV%7D%7BR%7D%5C%5C%5C%5CI%3D%5Cdfrac%7BV%7D%7B%5Crho%20%5Cdfrac%7Bl%7D%7BA%7D%7D%5C%5C%5C%5CI%3D%5Cdfrac%7B0.9%7D%7B5.6%5Ctimes%2010%5E%7B-8%7D%5Ctimes%20%5Cdfrac%7B1.5%7D%7B6%5Ctimes%2010%5E%7B-7%7D%7D%7D%5C%5C%5C%5CI%3D6.42%5C%20A)
So, the current in the wire is 6.42 A.
Protons have a positive charge