Conduction: Frequently Asked Questions

What is Electrical Conductor?

Electrical Conductors are materials that allows electric charge to flow through it with little resistance. Electrical conductors are usually metals, such as copper, silver, etc.

What are Superconductors?

The substances in which there exists a zero resitance or infinite conductance are called superconductors. These exits at very low temperatures, which is near to absolute zero.

What is Conduction and Convection?

Conduction is the transfer of energy between one particle to another when there is direct contact between the particles whereas Convection is the transfer of heat energy from one particle to another by the movement of its constituent particles.

What are the Types of Conduction?

There are three types of conduction:

• Ionic conduction
• Electric conduction
• Heat conduction

What are Modes of Heat Transfer?

There are three modes of heat transfer- conduction, convection and radiation.

What is Conduction of Metal?

Conduction of metals is caused due to collisions between fast-moving free electrons and metal ions. Metals are good conductors of heat and electricity.

Does Gravity play any role in Transfer of Heat?

Gravity takes part only in convection only. In conduction and radiation, gravity does not play any role in heat transfer.

What is a Black Body?

A black body is a body which completely absorbs all radiation falling on it whatever be its wavelength.

What is the Difference Between Temperature and Heat?

• Heat is a form of energy which is transferred between two bodies when there is a temperature difference between them.
• Temperature is defined as a property of body which tells the degree of hotness or coldness of body with respect to another body.

What is Unit of Transfer of Heat?

Heat is measured in joules(J) and transfer of heat is measured in joule per second(J/s).

Conduction is the transfer of energy (heat or electricity) from one object to another when there is direct contact between these objects. During Conduction, a molecule gains energy and starts vibrating. This energy is then transferred to the other surrounding molecules until complete transfer of energy within the body is complete.

In this article, we will understand the meaning of conduction, types of conduction, Fourier’s Law, Conduction Resistance, and Heat conduction along with the difference between conduction, convection, and radiation.