. If the heater is plugged in for the
time t such that 1 kg of water at 20°C attains a temperature of 60°C. Find
(a) power of heater
(b) heat absorbed by water
(c) the value of t in seconds.
Answer:
(a)
Power of heater,
(1)
(b)Heat
absorbed by water, 
(c)Energy consumed by heater
(1)
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