# Heating effect of current Definition and 3 Discussions

Joule heating, also known as resistive, resistance, or Ohmic heating, is the process by which the passage of an electric current through a conductor produces heat.
Joule's first law, also known as the Joule–Lenz law, states that the power of heating generated by an electrical conductor is proportional to the product of its resistance and the square of the current:

P

I

2

R

{\displaystyle P\propto I^{2}R}
Joule heating affects the whole electric conductor, unlike the Peltier effect which transfers heat from one electrical junction to another.

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1. ### Heating Effect of Electric Current-Transmit at High Voltage

Homework Statement Why is it inefficient to use low voltage when transmitting electricity? Homework Equations P∝i2 P=Vi H=Vit P=Ri2 E/ti2=V/i These are all basically the same few formulas, but I wrote down all iterations of them. Anything from Joule's Law/Joule Heating The Attempt at a...
2. ### High Current low Voltage

I have to configure a power system for a furnace which demands very high current of the order of 50KAmps with low voltage of the order of 100 volts. Can anyone help me to get insight into how to configure the power system in boarder way. I am planning to use a transformer with thyristors .
3. ### How does the current carrying capacity depends on thickness

How does the current carrying capacity depends on the thickness of insulation of conductor ?