Physics
The rice is cooked more quickly in a pressure cooker because
It is covered.
Less quantity of water is used.
None of these
Water boils at a higher temperature under pressure.
Water boils at a higher temperature under pressure.
Food is cooked more quickly in a pressure cooker because at the higher pressure (1 bar/15 psi), the boiling point of water rises from 100ยฐC (212ยฐF) to 121ยฐC (250ยฐF). The hotter steam is able to transmit its thermal energy to the food at around 4 times the rate of conventional boiling.
Water boils at a higher temperature under pressure. Food is cooked more quickly in a pressure cooker because at the higher pressure (1 bar/15 psi), the boiling point of water rises from 100ยฐC (212ยฐF) to 121ยฐC (250ยฐF). The hotter steam is able to transmit its thermal energy to the food at around 4 times the rate of conventional boiling.
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