Two bulbs are of $(40 \mathrm{~W}, 200 \mathrm{~V})$, and $(100 \mathrm{~W}, 200 \mathrm{~V})$. Then

Question

Two bulbs are of $(40 \mathrm{~W}, 200 \mathrm{~V})$, and $(100 \mathrm{~W}, 200 \mathrm{~V})$. Then correct relation for their resistances is\

Professor PC Thomas Classes · Answer

(b) : $P=\frac{V^{2}}{R} \quad$ or, $R \propto \frac{1}{P} \quad 	herefore \quad R_{40}>R_{100}$\