PHYSICS 1 Resonance Electrical Circuits

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Presentation transcript:

PHYSICS 1 Resonance Electrical Circuits Somnath Bharadwaj and Pratik Khastgir, Department of Physics and Meteorology, IIT Kharagpur, 721 302 India http://www.cts.iitkgp.ernet.in/~phy1/

Electrical Circuits

Impedance

Average Power

Lorentzian Profile

Problem Choose R for critical damping What is the maximum power from a 10V source for R=2 Ohms?

Problem FWHM? Quality Factor Time Period T?

Log Decrement? =

Tacoma Narrows Bridge

Raman Effect E incident Antistokes Rayleigh Stokes Rayleigh scattering - same n Stokes scattering - less n Antistokes scattering - higher n

Benzene

Benzene Modes Breathing mode

Benzene Modes C-H bending mode

Benzene Modes C-C stretching mode

Raman Spectra Spectra provided by Prof. Anushree Roy

Resonance Line FWHM? Quality Factor?

Other Examples Atomic Transitions Earth’s Atmosphere

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