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If \( R_{1} \) of the given circuit is dipped in \( 1000 \mathrm{ml} \) of water at \( 30^{\circ} \mathrm{C} \), then the time after which the water starts boiling is. (take \( 1 \mathrm{cal}=4.2 \mathrm{~J} \) )
(1) \( 1148.4 \mathrm{sec} \)
(2) \( 18375 \mathrm{sec} \)
(3) \( 183.75 \mathrm{sec} \)
(4) \( 11.48 \mathrm{sec} \)
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