Hey yashwanth,

There are many books in the market to clear your basics in Electrical Engineering and also electronics. To clear your basics you need to follow the college books that they have goven or go for the books which i am going to suggest or the best option is watch video of the basics untill your doubt is cleared. Some of the books which I followed and my friends also followed are:

• Basic Electrical Engineering Book by C.L. Wadhwa
• Electronics Devices and Circuit by theodore F bogart

Hope that helps

All the best