Hello candidate,

Current electricity is a vast chapter of physics and considering the entrance examination and board examinations point of you it's best that first you learn the basic of the chapters from the NCERT textbook itself and then you can refer to some other help books such as HC Verma and DC Pandey in order to solve more higher level problems of these chapters which will help you to get your concept clear at higher level. After completing these chapters from the respective textbooks, solving previous year questions will be a confidence booster for you if you are able to solve them without any external help.

Hope you found it helpful. If you have any further queries feel free to post it here!!