Question

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

Answer 1

Correct option is D.

$$\textbf{Concept used:}$$

$$\bullet $$ Heating effect of current.

$$\textbf{Correct option: D}$$

$$\textbf{Explanation for correct option:}$$

$$\bullet $$ 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.

$$\textbf{Explanation for incorrect option:}$$

$$\bullet $$ 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 $$H=I^2Rt.$$