Biot-Savart Law Explained: Formula, Derivation, Applications and Examples in Electromagnetism

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  Biot-Savart Law Explained: Formula, Derivation, Applications and Examples in Electromagnetism     Introduction The Biot-Savart explains how electric current produces a magnetic field. Whenever current flows through a conductor, a magnetic field is created around it. The Biot-Savart Law helps us calculate the magnitude and direction of this magnetic field at any point in space. The law was discovered by French scientists Jean-Baptiste Biot and Felix Savart in 1820 through experimental observations . Their work became a fundamental part of electromagnetic theory. The Biot-Savart Law is very useful in: Electromagnetism Electrical engineering Magnetic field calculations Solenoids and coils   Electromagnetic devices Electric motors Generators   Medical instruments like MRI scanners It forms the basis for understanding how current-carrying conductors generate magnetic fields. Historical Background In the early nineteenth century, scie...
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GK- TEST T0P 10 LONGEST RIVER

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Top 10 longest Rivers in the World

1.Nile River

Length: 6,650 km — Countries: Egypt, Sudan, Uganda and others (Africa)


2.Amazon River

Length: 6,400 km — Countries: Brazil, Peru, Colombia (South America)


3.Yangtze River

Length: 6,300 km — Country: China (Asia)


4.Mississippi–Missouri River

Length: 6,275 km — Country: United States (North America)


5.Yenisei River

Length: 5,539 km — Country: Russia (Asia)


6.Yellow (Huang He) River

Length: 5,464 km — Country: China (Asia)


7.Ob–Irtysh River

Length: 5,410 km — Country: Russia (Asia)


8.Parana river

Length: 4,880 km — Countries: Brazil, Argentina, Paraguay


9. Congo River

Length: 4,700 km — Countries: DR Congo, Congo (Africa)


10. Amur River

Length: 4,444 km — Countries: Russia,china

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E-K Diagram in Solid State Physics Explained | Energy Wave Vector Diagram, Band Theory & Applications

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  E-K Diagram in Solid State Physics     Introduction In solid state physics, one of the most important concepts used to understand the behavior of electrons in crystals is the E-K diagram. It is also called the Energy-Wave Vector Diagram or Energy-Momentum Diagram. This graph shows the relation between the energy (E) of an electron and its wave vector (K) inside a crystal. The E-K diagram helps us understand: Electron motion in solids   Energy bands   Effective mass of electrons   Conductors, semiconductors, insulators   Band gaps   Electrical properties of materials This concept is widely used in semiconductor physics , electronics, quantum mechanics, and nanotechnology. What is E-K Diagram? The E-K diagram is a graph between E = Energy of electron K = Wave vector Wave vector is related to momentum of electron p = ℏK Where: ( p ) = momentum   ( ℏ ) = reduced Planck constant ( K ) = wave vector ...
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