Frequency of electromagnetic waves = Frequency of oscillating charge = v. Class 12 Physics Chapter 8 Electromagnetic Waves Session 2024-2025.
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NCERT Solutions for Class 12 Physics updated for CBSE academic session 2021-2022.
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Electromagnetic Waves are coupled time-varying electric and magnetic fields propagating in space with the speed of light. Class 12 Physics Chapter 8 Electromagnetic Waves Session 2024-2025.
Large-scale transmission of electric energy over long distances is achieved using transformers. Step-up transformers at power plants increase voltage, reducing current to minimize transmission losses. High-voltage electricity travels through transmission lines efficiently. At distribution points, step-down transformers lower the voltage ...
The transformer works on the principle of electromagnetic induction (Faraday’s law of induction). When an alternating current flows through the primary winding, it creates a changing magnetic flux in the transformer core. This flux induces a voltage in the secondary ...
Here are four common energy losses in a transformer: (i) Core Loss (Iron Loss): This occurs in the transformer core due to hysteresis and eddy currents when it is subjected to alternating magnetic fields. (ii) Copper Loss (Winding Resistance ...