A 500W heater is used to heat 0.6kg of water from 25^oC to 100^oC in t₂ seconds. If another 1000W heater is used to heat 0.2kg of water from 10^oC to 100^oC in t, seconds, find \(\frac {t_1}{t_2}\)

5/4

1/5

Correct answer is B

Heat energy = Electrical energy

mc\(\theta\) = power x time

0.6 x c x (100 - 25) = 500 x t₁

and, 0.2 x c x (100 - 10)= 100 x t₂
\(\frac {t_1}{t_2}\) = 5

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A 500W heater is used to heat 0.6kg of water from 25oC to 100oC in t2 seconds. If another 1000W heater is used to heat 0.2kg of water from 10oC to 100oC in t, seconds, find \(\frac {t_1}{t_2}\)

Aptitude Tests

A 500W heater is used to heat 0.6kg of water from 25^oC to 100^oC in t₂ seconds. If another 1000W heater is used to heat 0.2kg of water from 10^oC to 100^oC in t, seconds, find \(\frac {t_1}{t_2}\)