The current flowing through the resistor,$$RzRz is zero. $$Why$?$ Check all that apply.

Question $3$Answer

a$.$

The current flowing into the non$-$inverting input of the op$-$amp is always zero.

b$.$

All the current due to the DC voltage source is flowing to the ground through RpRp and$$RgRg$$

c$.$

The current flowing into the inverting input of the op$-$amp is exactly equal to the current flowing into the non$-$inverting input.

d$.$

A virtual short exists between the two input terminals of the op$-$amp.

e$.$

The voltage at the non$-$inverting input of the op$-$amp is negligibly small.