Thermoelectricity refers to a phenomenon that occur at the junctions of dissimilar conductors or within a single conductor, when a temperature difference exists between the junctions or across a conductor. There are three thermogalvanic effects, namely Seebeck effect, Peltier effect and Thomson effect. They involve conversion of thermal energy into electrical energy or vica versa. They are all reversible in contrast with the Joule effect which is irrevesible. Seebeck effect is the superposition of Peltier effect and Thomson effect. In a thermocouple, if the two junctions are maintained at a potential difference, a temperature difference is established, i.e. heat is generated at one junction and absorbed at the other junction. This is called Peltier effect and its converse is the Seebeck effect. The relationship between the. thermo-emf across the junction and the temperature difference is parabolic.
Which heat is produced throughout the conducting wire

Options

A. Peltier heat
B. Thomson effect heat
C. Joule heat
D. none of these

Answer

To determine which heat is produced throughout the conducting wire, we need to understand the different effects mentioned in the context of thermoelectricity and how they relate to heat production in conductors.

### Step-by-Step Solution:

1. **Understanding Thermoelectricity**:
- Thermoelectricity occurs at the junctions of dissimilar conductors or within a single conductor when there is a temperature difference. This leads to the generation of electrical energy from thermal energy or vice versa.

2. **Identifying Thermogalvanic Effects**:
- The three main thermogalvanic effects are:
- **Seebeck Effect**: Generates a voltage when there is a temperature difference across a conductor.
- **Peltier Effect**: Heat is absorbed or released when current flows through a junction of dissimilar conductors.
- **Thomson Effect**: Heat is absorbed or released when current flows through a single conductor with a temperature gradient.

3. **Joule Heating**:
- Joule heating (or resistive heating) occurs when an electric current passes through a conductor, producing heat due to the resistance of the conductor. This is described by Joule's law, which states that the heat produced (Q) is proportional to the square of the current (I) and the resistance (R) of the conductor:
\[ Q = I^2 R t \]
- This heat is produced uniformly throughout the conducting wire as long as the current flows.

4. **Conclusion**:
- The heat produced throughout the conducting wire according to Joule's law is known as **Joule heat**. This heat is generated due to the resistance encountered by the electric current flowing through the conductor.

### Final Answer:
The heat produced throughout the conducting wire is referred to as **Joule heat**.