CAPE Physics Unit 1 · 2009 · Paper 1 · Question Q33

An immersion heater rated at 150\text{ W} is fitted into a large block of ice at 0\ ^\circ\text{C}. The specific latent heat of fusion of the ice is 3 \times 10^5\text{ J kg}^{-1}. How long does it take to melt 10\text{ g} of ice?

1. (A)2\text{ s}
2. (B)5\text{ s}
3. (C)20\text{ s}
4. (D)150\text{ s}