F.Sc ICS Notes: Physics XII: Chapter 18 Electronics Numerical Problems 2nd Year Physics Notes Online Taleem Ilmi Hub
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Numerical Problem: 18.2 Figure on book shows a transistor which operates a relay as the switch S is closed. The relay is energized by a current of 10m A. Calculate the value Rg which will just make the relay operate . The current gain β of the transistor is 200. When the transistor conducts, its Vbe can be assumed to 0.6 Volt.
Numerical Problem: 18.3 In circuit shown on the book figure, there is negligible potential drop between B and E, where is β is 100, calculate:
(i) base current
(ii) collector current
(iii) potential drop across Rc
(iv) Vce
Numerical Problem: 18.4 Calculate the output of the op-amp circuit shown in figure on book.
Numerical Problem: 18.5 Calculate the gain of the non-inverting amplifier as in figure on book.
Numerical Problem: 18.6 Calculate the gain of an amplifier in which the collector resistance Rc is 5 kilo Ohm. The input resistance between the base and emitter of a typical transistor is 2.5 kilo Ohm and the value of its β = 100.
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