Questions
There are 27 drops of a conducting fluid. Each has a radius r and they are charged to a potential . These are combined to form a bigger drop. Its potential will be :
detailed solution
Correct option is C
Let charge and radius of bigger drop be Q and RThen V=kQR=k27qRwhere R=(27)1/3r=3rSo, V=27kq3r=9kqr=9V0Talk to our academic expert!
Similar Questions
Two spherical shells are as shown in figure.
Let r be the distance of a point from their common centre. Then, match the following columns and mark the correct choice from the given codes.
| Column-I | Column-II | ||
| i. | Electric field for r < R1 | p. | is constant for q2 and vary for q1 |
| ii. | Electric potential for r < R1 | q. | is zero for q2 and vary for q1 |
| iii. | Electric potential for R1 < r <R2 | r. | is constant |
| iv. | Electric field for R1 < r <R2 | s. | is zero |
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