P1.9 Energy and power Flashcards
1
Q
What is the definition of power?
A
The energy you supply per second
2
Q
What is power measured in?
A
Watts or Kilowatts
3
Q
What 1 watt equal to?
A
1 J/s
4
Q
What is the equation for power?
A
Power (w) = energy transferred (J) / time taken for energy transferred (s)
5
Q
What can the efficiency equation be written as?
A
Useful power out/ useful power in
6
Q
What is the equation for power wasted?
A
Total power in - useful power out
