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 |
Codes:
detailed solution
Correct option is A
For r < R, E = 0 as no charge is inside region r < R1∴E = 0 at all points For rTalk to our academic expert!
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From A conducting sphere of radius R a cavity of radius R/2 is cut out as shown in the figure. At the centre of cavity a point charge q is placed then, the potential and field at point P as shown in the figure is
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