Transferring, Storing, and Efficient use of Energy

Question 1

What is ‘Work Done’?

Answer 1

Work Done = ‘Energy Transfer’ that occurs when energy from a force is transferred to another body.

Work Done is measured in Joules (J) or sometimes Newton Metres (Nm)

The Equation > Joules = Force (in Newtons) x Distance (M)

Question 2

What different type of Work Done are there?

Answer 2

Mechanical Work done: Occurs when Energy from an opposing force is transferred to a body and usually used to move it.

Electrical Work done: Energy which is transferred through the flow of current in a circuit. Usually consumed by a device.

Question 3

What is ‘Power’ and the Ideas behind it? (1)

Answer 3

Power 1): Is the RATE in which Energy is Transferred.

Power is measured in Watts (W)

Equation 1: Power = Energy ÷ Time (P = E/T)

Question 4

What is ‘Power’ and the ideas behind it? (2)

Answer 4

Power is the rate in which WORK IS DONE
(Power is the rate in which mechanical work is done)

Power = Joules ÷ Time (S) (P = work done (J) / T)

Power is energy transferred PER SECOND