Which of the following statement is true for an instrumentational amplifier?

Question: Which of the following statement is true for an instrumentational amplifier?

1.the input resistance of both the inputs is very high and does not change as the gain is varied

2.the input resistance of both the inputs is very low and does not change as the gain is varied

3.the input resistance of both the inputs is very high and does change as the gain is varied

4.the input resistance of both the inputs is very low and does change as the gain is varied


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