Joule's Laws of Heating

What is Joule's heating effect? How can it be demonstrated experimentally? List its four applications in daily life.

From Joule's Law of heating, the heat produced, $\mathrm{H} =$

Verification of joule's law of heating​.

Laws of heating were given by,

States Joule's law of heating and give its expression.

As shown in the schematic below, a rod of uniform cross-sectional area $A$ and length $l$ is carrying a constant current $i$ through it and voltage across the rod is measured using an ideal voltmeter. The rod is stretched by the application of a force $F$.

Which of the following graphs would show the variation in the voltage across the rod as function of the strain $\epsilon$ when the strain is small. Neglect Joule heating.

Nichrome resistance coil of $25 \mathrm{\Omega }$ is connected with $12 \mathrm{V}$ accumulator cell (battery) and current flows through it for $15$ minutes. Determine heat produced in this coil in joules. 

Write Joule's law of heating.

Calculate the amount of heat generated (in kJ) when $10 \mathrm{A}$ current flows through two resistors of resistance $1 \mathrm{\Omega }$ and $2 \mathrm{\Omega }$ respectively connected in series for $1$ minute.

Calculate the amount of heat generated (in kJ) when $10 \mathrm{A}$ current flows through two resistors of resistance $1 \mathrm{\Omega }$ and $2 \mathrm{\Omega }$ respectively connected in series for $1$ minute.

Which of the following components of an LCR circuit, with AC supply, dissipates energy?

One junction of thermocouple is at $0 \mathrm{℃}$ and the other is at $T \mathrm{℃}$. The thermo-emf (in $\mathrm{V}$) is given by $E=20\times {10}^{-6}T-0.02\times {10}^{-6}{T}^2$. The maximum value of $E$ is:

The charge supplied by the source varies with time $t$ as $Q=at-b{t}^2$. The total heat produced in the resistor $2R$ is: