Question

The electrical resistance of a mercury column in a cylindrical container is r. The mercury is poured into another cylindrical container with half the radius of cross-section. The resistance of the mercury column is

Answer 1

Thank you for asking this question. The options for this question are missing, here are the missing options:

1) R/2

2) R/8

3) R/4

4) R/16

The correct answer for this question is R/16

If there is any confusion please leave a comment below.

Answer 2

how????

can u plz explain