Ncert Exercises & Solutions

In a CE transistor amplifier, there is a current and voltage gain associated with the circuit. In other words, there is a power gain. Considering power a measure of energy, does the circuit violate the conservation of energy?

Hint: An extra power is is given to the circuit.

In the CE transistor amplifier, the power gain is very high.

In this circuit, the extra power required for amplified output is obtained from the DC source. Thus, the circuit used does not violate the law of conservation.

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