Current wasted or leakage?

I was measuring amps on an inducer motor. The amerage was a few milliamps lower on the neutral wire than the ungrounded wire and I thought that might be something like current being wasted if there is such a thing (similar to voltage drop) or maybe current leakage to ground? In this case it was a motor that was rated at 2.3A. I was measuring about 2.0 on the black wire and about 1.9 on the neutral. Very miniscule, but it made me curious .