Soft iron is important in many electrical applications because of its magnetic properties. It is used in the cores of transformers and electric motors, as well as in electromagnets, magnetic recording and sensing equipment. It is also used in electrical shielding because it has high permeability, meaning it can absorb and contain magnetic fields, thus …
Importance of soft iron – പച്ചിരുമ്പിന്റെ പ്രാധാന്യം Read More »
Self induction is a phenomenon in which a changing electric current in a circuit induces a voltage in the same circuit. It is also known as “self-inductance.” It is an electromagnetic phenomenon in which a changing current in a circuit causes a change in the magnetic field, which then induces a voltage in the same …
A transformer is an electrical device that is used to transfer electrical energy between two or more circuits through the use of electromagnetic induction. It works by converting the alternating current (AC) in one circuit into another AC of a different voltage level and current. The transformer has two or more separate windings (coils of …
One method that can be used to bring about a change in magnetic flux without continuously switching on and off is by adjusting the current in the circuit. By adjusting the current, the strength of the magnetic field can be increased or decreased. This will, in turn, cause a change in the magnetic flux.
Mutual induction is the phenomenon of two separate objects inducing currents in each other. It occurs when an alternating current flows through a coil of wire and induces a current in another coil of wire nearby. This phenomenon is the basis of electrical transformers and is also used in other electrical components such as relays …
An emf is an electrical potential difference between two points. It is measured in volts (V). It is generated by a source such as a battery, generator, or transformer. An emf has the ability to drive current through a circuit. An emf can be either positive or negative depending on the direction of the current. …
Peculiarities of the emf – ഇ എം എഫിന്റെ പ്രത്യേകതകൾ Read More »
Generators are devices used to convert mechanical energy into electrical energy. They usually have an electric motor which turns a coil of wire in a magnetic field to generate an electric current. Generators are used in many applications such as providing backup power for homes and businesses, powering large machinery, and providing power to remote …
Alternating current (AC) is an electric current that reverses its direction of flow periodically. It is the form of electricity used in most homes and businesses. Direct current (DC) is an electric current that flows in one direction only. It is the form of electricity used primarily in batteries and in electronics like computers and …
Fleming’s Right Hand Rule states that if you point the thumb of your right hand in the direction of the conventional current, and the fingers of the right hand in the direction of the magnetic field, the palm of the hand will point in the direction of the force experienced by the conductor.
1. Magnetic field strength 2. Number of turns in the coil 3. Area of the coil 4. Motion of the coil relative to the magnetic field 5. Frequency of the changing magnetic field