A 20 V , 750 Hz source is connected to a series combination of $R= 100\; \Omega, C= 10 \mu F$ and $L= 0.1803\;H$ . Calculate the time in which resistance will get heated by $10^{\circ}$ if thermal capacity of the material $=25 \%$

Question

$\begin{array}{1 1} 340 \;sec \\ 350\;sec \\ 249\;sec \\ 349\;sec \end{array}$