PHYSICS · Multi-part · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
A pair of square plates, each of side 5.0cm, are placed parallel to one another in air so that the gap between them is 0.50mm. The plates are then pulled apart until the gap becomes 1.0mm while their areas remain unchanged.
(i) Calculate the initial capacitance of the capacitor.
(ii) Determine the percentage change in capacitance produced by increasing the separation.