2014 CAIE AS & A level May June Physics Paper 12 Q. No. 29 (9702/11/M/J/14) by Sajit C Shakya
2014 CAIE AS & A level May June Physics Paper 11 Q. No. 29 (9702/11/M/J/14) by Sajit Chandra Shakya from Nepal Chapter - ELECTRIC FIELD The diagram shows two points P and Q which lie 90° apart on a circle of radius r. A positive point charge at the centre of the circle creates an electric field of magnitude E at both P and Q. Which expression gives the work done in moving a unit positive charge from P to Q?