And we also, typically draw a ground into that op-amp as well.

We can draw our circuit, as well there's some current, i-,

which is the inverting input current, is the current i+,

which is the non-inverting input current.

There's also a voltage associated with the non-inverting input,

the plus, and with the inverting input V minus.

And what we know about op amps and ideal op amps, is that I minus,

so the current flowing into the inverting input of the op amp

is equal to the current that flows into the non-inverting

input of the op amp and that they're both equal to zero.

In other words, there's no current that flows into an ideal op amp.