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Maxwell's Equations & Displacement Current Video Lecture | Physics Class 12 - NEET
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FAQs on Maxwell's Equations & Displacement Current Video Lecture - Physics Class 12 - NEET
| 1. What are Maxwell's equations? |  |
Ans. Maxwell's equations are a set of fundamental equations in electromagnetism that describe the behavior of electric and magnetic fields. They were formulated by James Clerk Maxwell and are used to understand and predict the interaction between electric charges and magnetic fields.
| 2. What is the significance of Maxwell's equations? | |
Ans. Maxwell's equations are of great significance as they form the foundation of classical electromagnetism. They provide a unified understanding of the phenomenon of electricity and magnetism and have led to the development of many technologies, including radio, television, and telecommunications.
| 3. What is the displacement current in Maxwell's equations? | |
Ans. The displacement current is a term introduced by Maxwell in his equations to account for the changing electric field in a region. It is a hypothetical current that flows in a region where there is a changing electric field, even in the absence of actual charge carriers. It completes the symmetry of the equations and allows for the propagation of electromagnetic waves.
| 4. How does the displacement current relate to electromagnetic waves? | |
Ans. The displacement current plays a crucial role in the generation and propagation of electromagnetic waves. When an alternating current flows through a wire, it creates a changing electric field around it. This changing electric field gives rise to a displacement current, which in turn produces a magnetic field. The interaction between the electric and magnetic fields generates electromagnetic waves that can travel through space.
| 5. Can you give an example of how Maxwell's equations and the displacement current are applied in real-world applications? | |
Ans. One example is the operation of radio antennas. Maxwell's equations, along with the concept of displacement current, explain how radio waves are generated and transmitted. The changing electric current in the antenna creates a changing electric field, which generates a displacement current. This displacement current, along with the magnetic field, propagates as an electromagnetic wave and can be received by a radio receiver for communication purposes.
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