electrical power

Question 1

recall

• Recall what electrical power is.

Answer 1

power rate is the rate at which electric energy is transferred in a circuit.

Question 2

calculate

• Use formula triangles to calculate power.

Answer 2

As these three elements are represented by a “right-angled triangle”, their relationship can be defined as: S2 = P2 + Q2, where: P is the real power in watts (W), Q is the reactive power in volt-amperes reactive (VAr) and S is the apparent power in volt-amperes (VA).

Question 3

recall the difference between static and current electricity.