Lenz Law: Which Capacitor Plate Becomes Positive?

[starless.aeon]

A circuit contains a resistor and an uncharged capacitor. Pointing into the plane of the circuit is a uniform magnetic field (B). If the magnetic field increases in magnitude with time, which plate of the capacitor (top or bottom) becomes positively charged?



I don't understand how the hand rules play into this question, because of the capacitor. And I don't understand how I'm supposed to figure out which plate is positive and which is negative. Please help me out?



Thanks in advance, guys. :shy:

 

[Delphi51]

A capacitor acts like a direct connection when it is uncharged, so ignore it while you use the hand rule to determine the direction of the current. Charge doesn't actually pass through a capacitor, so if positive current flows into a capacitor, it will charge that side of the capacitor positively.

 

[starless.aeon]

OH. It makes this question so much easier now, thanks. bundles.

I've come to determine my upper plate is negative cause the electrons flow into it.

again, thanks so much.