railway RRB Technician Grade 1 Mock Test 2024 Physics Electric Charges and Coulomb's Law Electric Charge
A body has a charge of -3.2 µc. if it has 2 × 1013 protons, the no of electrons present in the body is :
1
4 × 1013
2
5 × 1013
3
2 × 1013
4
3 × 1013