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
A galvanometer is an electrical measuring instrument used for detecting and measuring small electric currents. It consists of a coil of wire suspended between the poles of a magnet. When an electric current passes through the coil, it produces a torque which causes the coil to rotate. The angle of rotation is proportional to the …
Electromagnetic induction is a process whereby an electric current is generated within a conductor by changing the magnetic field around it. When a magnetic field is moved past a conductor, the magnetic field induces an electric current in the conductor. This is due to the fact that a changing magnetic field produces an electric field, …
Electro magnetic induction – വൈദ്യുതകാന്തിക പ്രേരണം Read More »
Michael Faraday (1791-1867) was an English scientist who made significant contributions to the fields of electromagnetism and electrochemistry. He is best known for his work on the electromagnetic field, which laid the foundation for the development of the modern electrical power industry. He also discovered the properties of electromagnetic induction, diamagnetism, and electrolysis. He was …
A moving coil loudspeaker is a type of loudspeaker that uses a permanent magnet attached to a diaphragm to create sound. The diaphragm is attached to a coil of wire, which is suspended in a magnetic field. When an electrical signal passes through the wire, it creates an interaction between the magnetic field and the …
Moving coil loud speaker – ചലിക്കും ചുരുൾ ലൗഡ്സ്പീക്കർ Read More »
A split ring commutator is a type of electrical switch that works by rotating two contact rings on an axis, allowing them to come into contact with each other and thus allowing electricity to flow. It is used to reverse the direction of current in an electric motor
An armature is a type of motor or generator that uses coils of wire wound around a metal core to create a magnetic field. This magnetic field is then used to rotate or move the armature. Armatures are commonly found in electric motors, generators, and alternators. They are also used in transformers to step up …
An electric motor is a device that converts electrical energy into mechanical energy. It works by using an electric current to create a magnetic field that causes a rotor to spin, which in turn converts the electrical energy into mechanical energy. Electric motors are used in a wide variety of applications, from powering electric fans …
The motor principle states that when an electric current passes through a wire, a magnetic field is created around the wire. When the current is increased, the magnetic field also increases, creating a force that pushes against the wire. This force, which is known as the motor effect, causes the wire to rotate, producing mechanical …
Fleming’s left hand rule is a tool used to determine the direction of a force. It states that if the thumb of the left hand is pointed in the direction of the current flowing through a conductor, then the forefinger shows the direction of the magnetic field and the middle finger shows the direction of …
Fleming’s left hand rule – ഫ്ളെമിങ്ങിന്റെ ഇടതുകൈനിയമം Read More »