Noirro
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Homework Statement
A metal plate, which is d1=0.5mm in thickness, is put in parallel between the electrodes of a capacitor. Surface area of capacitor's electrodes is S=100cm2 and distance d between them is 2mm. What is the work that is needed to be done to remove the metal plate when capacitor is: a) disconnected from the source; b) connected to the source? The voltage of this source is U=100V.
Homework Equations
I believe it has something to do with the capacitor's energy formula W=CU2/2 and maybe Coloumb's Law.
I would be glad if someone could help me with this problem!