Physics : Efficiency

Question 1

Is energy always transferred into the form we intend ?

Answer 1

No it isn’t

Question 2

Are devices 100% efficient

Answer 2

No they aren’t

Question 3

Efficiency meaning is !

Answer 3

Proportion of the energy supplied transferred into useful energy output

Question 4

Equation for efficiency ( energy equation )

Answer 4

Efficiency = usueful energy output / total energy input

Question 5

Efficiency equation ( power equation )

Answer 5

Efficiency = useful power output / total power input