respectively Initially both the keys are open The connection

Last updated: 6/9/2023

respectively Initially both the keys are open The connection to earth of sphere A through K is such that the wire is insulated from shells B and C Now a charge Q is given to the shell B and key K is closed so that shell A is earthed without touching the shells B and C C B A A 4a B If U and U represent the electrostatic potential energies of the system before and after closing the switch K then 16 27 27 16 2a 21 3 4d U is