A tube of mercury with resistivity 9.84 × 10 -7 Ω ∙ m has an electric field inside the column of mercury of magnitude 23 N/C that is directed along the length of the tube. How much current is flowing through this tube if its diameter is 1.0 mm?

The current through the tube is 73.39A.

Explanation:

The relationship between the resistivity , the electric field , and the current density is given by

This equation can be solved for to get:

Since the current is

Now, for the tube of mercury , , and the area is ; therefore,

Hence, the current through the mercury tube is 73.39A.

graph slopes whilst gas cools, then it is flat whilst conensation to liquid happens, the coolong liquid then graphs as a slope when it solidifies graph is flat

latent heat