The Input Offset Current Equals the__.

Answer – D. difference between two base currents..

The input offset current equals the difference between two base currents.

Solution:

Input offset current: It is not necessary that I_B⁺and I_B^- are the same. Their difference is known as input offset current and generally the order of 200nA for BJT and 10pA for FET and the output in the absence of input will be 

                                    Vout=R_F.(I_OS) order of mV

                                Where     I_OS=   I_B⁺-I_B^-

This effect of Input offset current can be minimized by using the value of R_F.

Therefore, The input offset current equals the difference between two base currents.

Hence, Option (D) is the correct answer.

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