Define and explain
1 input resistance.
2 current amplification factor.

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Solution

Input resistance:
Input resistance of any network is the total equivalent resistance of its input terminals.It is the resistance seen by the input signal source when connected to the amplifier.It can be calculated by Ohm's law.
Rin=Vin/Iin
Current amplification factor:
Current Amplification Factor or Current Gain is basically the ratio of the output current to the input current when its passing through an electrical device. So, it gives us the amount of current gained as it flows through.
A=Io/Ii

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