# Question

A student uses an immersion heater to heat 0.30 kg of water from 20oC to 80oC for tea.

(a) If the heater is efficient and takes 2.5 min to heat the water. What is its resistance?

(b) How much current is in the heater? (Assume 120-V household voltage.)

(a) If the heater is efficient and takes 2.5 min to heat the water. What is its resistance?

(b) How much current is in the heater? (Assume 120-V household voltage.)

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