Voltage around a loop, half inside a capacitor and half outside

[RubinLicht]

Homework Statement

This is not a homework problem, I'm working through griffiths Electrodynamics on my own.

Homework Equations

when there is an emf source, since electrosatic fields integrate to zero around a loop

The Attempt at a Solution

The solution claims that since the integral of f (force per charge) around the a loop for any electrostatic field is zero, the emf is zero since that is the only field present.

However, when I thought about this problem, I reasoned that initially the charges in the wire would rapidly reorient themselves to cancel out the external field. and since the field is 0 through out the wire, and there isn't a source of emf that generates potential differences in the metal, the current is naturally zero. This is very different reasoning, and i don't think the solutions are valid. Can anyone confirm/deny please?

 

[haruspex]

The problem asks about "the emf in the loop". It's unclear what that means.
The reasoning offered explains why there should be no net emf in one complete trip around the loop, hence no sustained current. Your reasoning is that once the initial redistribution of charge settles down there is no net emf in any segment of the loop.
I see no contradiction, and both appear valid.

 

[rude man]

There is no source of emf anywhere within the loop so the current is obviously zero. Seems like what you reason and what the author reasons is the same. No emf!