1.

Two metallic sphenrs of radil R_(1) and R_(2) are charged. Now they are brought into contact with each other with conducting wire and then separated. If the electric fields on their surfaces are E_(1) and E_(2) respectively (E_(1))/(E_(2)) = ....... .

Answer»

`(R_(2))/(R_(1))`
`(R_(1))/(R_(2))`
`(R_(2)^(2))/(R_(1)^(2))`
`(R_(1)^(2))/(R_(2)^(2))`

SOLUTION :When the charged SPHERES of RADII `R_(1)` and `R_(2)` are BROUGHT into contact with each other and then separated, their POTENTIALS will be same.
`:. V_(1) = V_(2)`
`:. (kQ)/(R_(1))=(kQ)/(R_(2))`
`:. (kQ)/(R_(1)^(2))R_(1)=(kQ)/(R_(2)^(2))R_(2)`
`:. E_(1)R_(1)= E_(2)R_(2)`
`:. (E_(1))/(E_(2))=(R_(2))/(R_(1))`


Discussion

No Comment Found

Related InterviewSolutions