The main difference between Conduction and Induction is that Conduction depends only on an electric field, whereas Induction depends on a varying magnetic field.
Conduction vs. Induction
The process of conduction includes a flow of electric charge because of an electric field and to conduct a current from one conductor to another; the two conductors must be in connection with each other. On the other hand, in the process of induction, the flow of current can be prepared in a conductor by keeping it in the locality of another conductor and carrying a continually changing current.
The devices which are dependent on conduction can work both with A.C. current or D.C. current; on the flip side, devices that are dependent on induction can only work through A.C. current because inductor only responds to variation occurs in the current.
Any new current produced in the device follows the original currents in the conduction process. In contrast, the new current, which induced, always competes with the changes in the original current in the induction process. The method of charging through conduction refers to charging of an uncharged body by keeping it in contact with a charged body; on the other hand, the process of charging through induction refers to the charging of an uncharged body by carrying it adjacent to a charged object, but without allowing the two objects to come in contact with each other.
The conduction is a method of transference of energy by using matter, whereas induction does not need any medium or interaction to transfer the energy. Whenever the conduction path is broken, the process of conduction stops at the moment; on the contrary, the induction ceased when the objects drawback each other enormously.
What is Conduction?
The phenomenon of conduction is the transmitting of energy from a charged towards an uncharged body through the direct contact of both of the bodies. Such as we know that when the difference in potential exists between the two ends of a conductor, the current flows by a conductor. Because of this potential difference, the electric field is present across the conductor.
The electric field in conductor applies the electrostatic force on the charges because of which the charges move back and forth, and this movement of charges produces an electric current. This electrical current starts flowing through one conductor, begins to flow through the neutral body as well, which placed in contact.
This flow of charge between two bodies is because of direct contact. Thus, the charges start to flow now from one body to another. And these leads continue to flow due to conduction in both the bodies.
What is Induction?
The phenomenon of induction causes an uncharged body to become electrically charged by placing it near a charged body. The two bodies should be present very near to each other for the process of induction to take place.
The flow of current is because of the magnetic field, which formed around it, and this magnetic continue to change as the current flowing through the conductor varies. The magnetic field is usually present all around the body.
According to Faraday’s law, if a piece of the conductor placed in an area where a changing magnetic field is present, an electric field will be produced in the conductor, which would cause a flow of current in it. As a result, if the second piece of the conductor placed close to a conductor, which consists of a changing current (alternating current), the current would be produced in the second piece of the conductor as well. This process is known as mutual inductance.
The mutual inductance used to make an A.C. transformer. The devices which are dependent on induction can only work through A.C. current because the inductor only responds to variation occurs in the current.
- The process of transmitting the charges from a charged body towards a neutral body is known as the conduction method; on the other hand, the process of bringing the charges on a neutral body through the use of a charged body known as the induction process.
- The conduction method needs a direct physical interaction between the two bodies; however, on the contrary, in induction, no physical connection is necessary. Still, the two objects must be present close to each other.
- The current flowing through the bodies in the case of conduction contains the same direction. In contrast, in the situation of induction, the equal amount of current flows through both of the objects but in opposite directions.
- When an electric field passes from the conductor, the current formed in conduction; on the flip side, when a magnetic field changes around a conductor, the current is produced in induction.
- The bodies which rely on conduction can work both with A.C. or D.C. current; on the other hand, as inductor only responds to variation which happens in the current, so the bodies which rely on induction can work only with A.C. current.
- The transfer of energy in conduction occurs by using matter, while the transfer of energy in induction does not need any medium.
The above discussion concludes that the conduction permits the flow of charge because of the electric field produced in it, while the induction allows the flow of charge carriers because of the change in the magnetic field.