Two identical long, solid cylinders are used to conduct heat from temp `T_(1)` to Temp `T_(2)`. Originally the cylinders are connected in series and the rate of heat transfer is H. If the cylinders are connected in parallel then the rate of heat transer would be:

Options

A. H/4
B. 2H
C. 4H
D. 8H

Answer

C

Explanation

Initially effective resistance `= 2R`. In parallel effective resistance `= (R )/(2)` it has reduced by a factor of `1//4` so rate of heat transfer would be increased by a factor of 4. keeping other paramters same.