An electrical heater is used to melt a block of ice, mass \(1.5 \mathrm{~kg}\), If the heater is powered by a \(12 \mathrm{~V}\) battery, and a current of \(20 \mathrm{~A}\) flows through the coil, calculate the time taken to melt the block of ice at \(0^{\circ} \mathrm{C}\). (specific latent heat of fusion of ice \(=336 \times 10^{3} \mathrm{~J} / \mathrm{kg}\) )

A. \(76.0 \min\)
B. \(35.0 \mathrm{~min}\)  
C. \(21.0 \mathrm{mn}\)
D. \(2.9 \min\)

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Correct Answer: B