Which of the following does not has a correct depiction of the element involved in the heating effect of electric current?

$\text{Concept used:}$

$\bullet$ Heating effect of current.

$\text{Correct option: D}$

$\text{Explanation for correct option:}$

$\bullet$ We are asked which of the given options does not use the heating effect of current. 

$\bullet$ $CFLs$ and Tubelights do not work on the heating effect of current.

$\text{Explanation for incorrect option:}$

$\bullet$ Filament of a bulb, the coil of a heater and an electric iron, all these work on the principle of heating effect of current. So they are correct depictions. We were asked incorrect depiction.

$\bullet$ All these have a coil of high resistance which produces heat when current is passed through them, given by $H=I^{2}Rt.$