Question Answers

Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 17 - Electric Charge and Field > A thin metallic spherical shell contains a charge Q on its surface. A point charge q1 ​is placed at the centre of the shell and another charge q2 is placed outside the shell. All the three charges are positive. Then, the force on charge q1 is

A thin metallic spherical shell contains a charge Q on its surface. A point charge q1 ​is placed at the centre of the shell and another charge q2 is placed outside the shell. All the three charges are positive. Then, the force on charge q1 is

Four point charge are placed at the corners of a square with diagonal 2a as shown. What is the total electric field at the center of the square?