Question

Q2: Time (30 minutes) A. Your friend Shawn draw the two equipotential surfaces a & b (shown below) as part of his class project in PHYA21. IDV -10V Comment on these two diagrams if they are physically acceptable? When appropriate, try to help him by drawing the electric field on graphs. B. To demonstrate the effect of a dielectric on capacitors you quickly filled the space between the capacitor plates by an insulator while it is still connected to the battery. You noticed that the charge on the capacitor increased five time than the original charge of 10 pc. How the electric field & potential difference across the capacitor plates will be affected? Explain your reasoning. C. The three capacitors of capacitances C1 = 4 pF, C2 =10 uF and C3 =6 F are connected across a 20 V battery, as shown in Figure to right. Determine the charge on capacitor C3.

Answer 1

③ Diagrama -a is physically acceptable but because At boint o equil Potential is ov so it is bhysically Electrical field € Qp = kai OV DV Diagram-a accebtable ,,lov -lov Diagram-b surface - havo Potential lov Surface - (2) have Potential How So at Point - A we can't say about potential it is tev or lov so it is not physically acceptable Q 104L (0 Qp = SQ = 5xio aso so - kotlo kas of akci KAE KAS Ex Ejr electsic not affected Potential difference remant samt