  Deep radio surveys of extragalactic legacy fields trace a large range of
spatial and brightness temperature sensitivity scales, and therefore have
differing biases to radio-emitting physical components within galaxies. This is
particularly true of radio surveys performed at less than 1 arcsec angular
resolutions, and so robust comparisons are necessary to better understand the
biases present in each survey. We present a multi-resolution and
multi-wavelength analysis of the sources detected in a new Very Long Baseline
Array (VLBA) survey of the CANDELS GOODS-North field. For the 24 VLBA-selected
sources described in Paper I, we augment the VLBA data with EVN data, ~0.1-1
arcsecond angular resolution data provided by VLA and e-MERLIN. This sample
includes new AGN detected in this field, thanks to a new source extraction
technique that adopts priors from ancillary multi-wavelength data. The high
brightness temperatures of these sources (Tb > 10^6 K) confirm AGN cores, that
would often be missed or ambiguous in lower-resolution radio data of the same
sources. Furthermore, only 15 sources are identified as 'radiative' AGN based
on available X-ray and infrared constraints. By combining VLA and VLBA
measurements, we find evidence that the majority of the extended radio emission
is also AGN dominated, with only 3 sources with evidence for extended
potentially star-formation dominated radio emission. We demonstrate the
importance of wide-field multi-resolution (arcsecond-milliarcsecond) coverage
of the faint radio source population, for a complete picture of the multi-scale
processes within these galaxies.
