I@Gyro Gearloose
INote for OP
+solved @user1 @user2...
P@integralofe^2v
Ibasically u do know that electric field inside a hollow sphere or a conductign solid sphere is always zero due to its surface charge and any other outside charge right?
Iso electric field on surface = k * 2q/(2R)^2
Iso 1st option seems right
Pyeah 1st option i got
Panswer is ACD
Pcant do C part
Ifor it basically u need to understand that potential at C due to inner point charge and the charges induced on inner surface of the sphere will cancel each other out so that leaves us with potential due to outer surface + potential due to 2q=0 sinc net potential at C should be zero cuz grounded
PSo you get q'=-q where q' is the charge bcz of earthing
POkk
PIf you had to calculate B part what would you do
PBefore switching the field inside isnt zero right?, because of the charge q
IDue to the inner charge q, there will be some induced charges on inner surface of sphere which is -q, so outer surface must have charge 4q, cuz total charfe is 3q, hence potential due to outer surface should be 4kq/R but im not sure as i have seem to forgotten conductors
and also the inner point charge and induced charge on inner surface, cause the electric field inside sphere to be zero always
and also the inner point charge and induced charge on inner surface, cause the electric field inside sphere to be zero alwaysP+solved @integralofe^2v
IPost locked and archived successfully!
Archived by
@1382187168230936577 (1382187168230936577)
Time
October 5, 2025
Solved by
@813025027611688970 (813025027611688970)
