What is the ideal energy efficiency?, 100%, 30%, 0%, 50%, A certain process produces 300 Joules of energy from an input of 1,200 Joules of energy. What is its energy efficiency?, 20%, 25%, 30%, 70%, A man expends 100J of work to move a box up an inclined plain. The amount of work produced is 80J. What is the man's efficiency?, 80%, 20%, 800%, 78%, A wind turbine generates 100 joules of electricity from a gust of wind which has 300 joules of energy. How efficient is the turbine?, 10%, 33%, 50%, 66%, A solar panel is 20% efficient at converting light energy into electricity. If it generates 200 joules of electrical power, how much power is wasted?, 500 J, 750 J, 800 J, 1000 J, An LED converts around 80% of the energy supplied to it into light. How much energy is converted into light if a total of 50 J is supplied to it?, 30 J, 40 J, 50 J, 60 J, Calculate the efficiency of a heater which can convert 700 joules of chemical energy into 175 joules of heat energy., 10%, 25%, 35%, 50%.

Efficiency calculation

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