List of top Physics Questions on Coulomb's Law asked in KCET

A body has a charge of \( -3.2 \mu C \). The number of excess electrons it has is

A point charge A of +10\mu C and another point charge B of +20\mu C are kept 1m apart in free space. The electrostatic force on A due to B is \( \overrightarrow{F}_1 \), and the electrostatic force on B due to A is \( \overrightarrow{F}_2 \). Then