. December 2018

LR Circuit

Q- The switch for the network of Figure has been closed for long time. It is then opened at the time defined as t = 0 s

(a) Determine the time required for the current Ito drop to 1 mA.

(b) Find the voltage Vat t = 1 ms.

(c) Calculate at t = 5 τ (time constant).


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Kirchoff's Law: Mesh Analysis

Q- Using mesh analysis determine the current through 5Ώ resistor and voltage V in the given network.


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Ray Optics

Q- A beam of light with red and blue components of wavelengths 670 nm and 425 nm, respectively, strikes a slab of fused quartz at an incident angle of 30o. On refraction, the different components are separated by an angle of 1.31 X 10-3 rad. If the index of refraction of the red light is 1.4925, wh…

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