7 A point charge q 2 x 10 C is placed at the centre a

Last updated: 6/9/2023

7 A point charge q 2 x 10 C is placed at the centre a spherical cavity of radius 3 cm in a metal piece Points a and b are situated at distances 1 5 cm and 4 5 cm respectively from the centre of cavity The electric field intensities at a and bare a 8 x 10 N C and zero c zero and 8 9 x 105 N C d None of these b zero and zero