What is convex and concave lens? Is concave lens positive or negative?
Discy Latest Questions
What is electric potential and its unit in physics? Is electric potential scalar or vector quantity? How electric potential is created? What is negative and positive electric potential? Is electric potential the same as voltage?
1. What is called electric field in physics and please tell it`s formula? 2. How does an electric(electrostatic) field work?
does a body have electric charge, if yes then how ? Is everything electrically charged in the universe?