Question

The main difference between voltage and power amplifier is that
A. Power amplifier handles currently
B. Power amplifier handles large voltage
C. Power amplifier handles large power
D. None of these

Answer 1

Hint: An amplifier is an electronic device used to boost the level of signal present at its input and provides the magnified but identical signal at the output used for amplification. Generally, many applications require a very high output signal, which a signal amplifying unit fails to provide; hence we use an amplifier to provide a high level of the signal.
Voltage and power are the two major classifications of amplifiers, and this classification is done based on the level of input and the output signal.

Complete answer:
A voltage amplifier is an electronic circuit that accepts an input voltage and provides magnified and replica output voltage. Voltage amplification is the ratio of the amplified voltage at the output terminals of an amplifier to the alternating voltage impressed at the input terminals.
A power amplifier is an electronic amplifier designed to increase the magnitude of the power signal at the input terminal. The power is increased to a high level, which is enough to drive output devices like speakers. The power amplifier works on converting the DC power drawn from the power supply into an AC voltage signal delivered to the load.
The crucial difference between voltage and power amplifiers is that a voltage amplifier amplifies the voltage level, whereas the power amplifier boosts the power level of an in signal.

So, the correct answer is “Option C”.

Note:
Students should not get confused with the terms Voltage, Current, and Power Amplifiers. All three terms are different from each other. Voltage Amplifiers attenuates or strengthen the algebraic value of the impressed inputs while power amplifiers attenuate or strengthen the product of the current and voltage impressed to its input.