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Bio potential amplifiers have ____________ input terminals.

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Bio potential amplifiers have ____________ input terminals.

(a) 3

(b) 4

(c) 5

(d) 6

I got this question by my school teacher while I was bunking the class.

My question is from Sources of Noise in Low Level Measurements topic in division Recording System of Biomedical Instrumentation

1 Answer

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Right answer is (a) 3

To explain I would say: Bio potential has three input terminals. Out of the three one is arranges at the reference potential. The other two are live terminals. Bio potential amplifiers are also known as differential amplifiers. The differential amplifier is employed when it is necessary to measure the voltage difference between two points, both of them varying in amplitude at different rates and in different patterns.

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