Hey there.. need helps here..
The question is..
Derive an expression relating the output voltage, Vo to the input current, Iin.

i try to derive it.. but..
got problem with RL
V1 = -IinRf
Vo =- R2/R1(-IinRf) how to include Rl in my derivation?

 

Voltage gain don't depends on the load resistance

 

Voltage gain don't depends on the load resistance

should i ignore the RL?

 

RL should be high enough in value to not overload the drive capability of the amplifier.

 

should i ignore the RL?

Yes, because you dealing with ideal opamp.

 

should i ignore the RL?

To reinforce the statement already provided by others, the load resistance normally does not have an effect on the gain. Particularly when you are dealing with an ideal opamp.

hgmjr

 

An ideal op amp has zero output impedance.