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Motional emf | Motional Electromotive Force Motional emf | Motional Electromotive Force :- Consider a conductor of length l moving with velocity v through a uniform magnetic field B, as shown in figure below. The electrons inside the wire also move with velocity v, and each experiences a magnetic force of magnitude F =…
Lenz’s Law | Lenz Law | What is Lenz Law Lenz’s Law | Lenz Law | What is Lenz Law :- When a changing magnetic field induces an electric current in a circuit, that current itself produces a magnetic field. The direction of this induced current is not random — it always acts in…
Faraday’s Laws of Electromagnetic Induction Faraday’s Laws of Electromagnetic Induction :- After performing a series of experiments (Faraday’s Experiment) on magnetic fields and electric currents, Michael Faraday summarized his observations in the form of two fundamental laws known as Faraday’s Laws of Electromagnetic Induction. These laws explain how an electromotive force (emf) and current…
Magnetic Flux | What Is Magnetic Flux Magnetic Flux | What Is Magnetic Flux :- Magnetic flux represents the total number of magnetic field lines passing normally through a given surface. It depends on the strength of the magnetic field, the area of the surface, and its orientation with respect to the magnetic field. A…
A ray of light is incident on a concave mirror Question : A ray of light is incident on a concave mirror . It is parallel to the principal axis and its height from principal axis is equal to the focal length of the mirror. The ratio of the distance of point B to…
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Faraday’s Experiment Faraday’s Experiment :- Electricity and magnetism are closely related branches of physics. In 1831, the English scientist Michael Faraday demonstrated that an electric current can be produced in a coil when there is relative motion between the coil and a magnet. This simple experiment laid the foundation of electromagnetic induction. Electromagnetic induction…
A plane polarized blue light ray is incident Question : A plane polarized blue light ray is incident on a prism such that there is no reflection from the surface of the prism. The angle of deviation of the emergent ray is 𝛿 = 60° (see Figure-1). The angle of minimum deviation for red…
Earthing Of Charged Or Uncharged Metal Bodies Earthing Of Charged Or Uncharged Metal Bodies :- In electrical analysis, the earth is considered as a very large conducting sphere, whose radius is about 6400 kilometers. If the earth is given a charge Q, then its potential becomes : Since the value of RE is very…
Total Electrostatic Energy Of A System Total electrostatic energy of a system :- Total Electrostatic Energy of a System is the sum of the self-energy of individual charged conductors and the interaction energy between different charges or conductors. Total Electrostatic Energy (U) = Sum of all self-energies (Uself) + Sum of all interaction energies…
Charge Sharing Between Conductors Charge Sharing Between Conductors :- When two isolated conductors are connected by a conducting wire, charge starts flowing between them until they reach the same electric potential. This happens because charge always moves from higher potential to lower potential to minimize potential difference. Process of Charge Sharing Between Conductors :…