Two resistances R and 2R are connected in parallel in an electric circuit. The thermal energy developed in R and 2R are in the ratio

Options

A. `1:2`
B. `1:4`
C. `4:1`
D. `2:1`

Answer

D

Explanation

The resistance are connected in parallel hence, voltage will remain constant.
`E=(v^(2)t)/(R ),E prop (l)/(R )`
`therefore " " (E_(1))/(E_(2))=(R_(2))/(R_(1))=(2R)/(R )=(2)/(1)`