You are given a resistance coil and a battery. In which of the following cases is largest amount of heat generated?

Options

A. When the coil is connected to the battery directly
B. when the coil is divided into two equal parts and both the parts are connected to the battery in parallel
C. when the coil is divided into four equal parts and all the four parts are connected to the battery in parallel
D. When only half the coil is connected to the battery .

Answer

C

Explanation

`H prop (V^2)/R`
(a) `H prop (V^2)/R`
(b) `H prop (V^2)/(R//4)`
(c) `H prop (V^2)/(R//16)`
(d) `H prop (V^2)/(R//2)`