(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A 2.5kW electric kettle takes 3 mins to raise the temperature of 1.2kg of water from a temperature of 20 degrees C to a temperature of 100 degress. The specific heat capacity of water is 4.2kJ/(kg K)

2. Relevant equations

So far I know that we're either using P=vit ot Q=mct

How do i find:

(a) enerygy output from 2.5kW heating element in a time of 3 mins, (b) efficiency of the heating.

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# Homework Help: Find the efficiency of the heating

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