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If, for example, your electric water kettle provided 75J of thermal energy to heat the water...

If, for example, your electric water kettle provided 75J of thermal energy to heat the water for every 100J of electrical energy consumed from the outlet, calculate the efficiency of your electric water kettle in heating the water (as a decimal).

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Answer #1

Efficiency is defined as the required output to the input provided .Here output is 75 joules of thermal energy and input is 100 joules of electrical energy

Therefore efficiency is 75/100=0.75 or 75 percent

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