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What does Electrical Power refer to?
The actual rate at which energy is provided to and consumed by an electric circuit
How is power expressed?
In Watts(Joules per second
How can power be calculated?
By multiplying the voltage(in volts)
The voltage is applied to the circuit by:
The circuit(in amperes) that flows in the circuit
What is P=IV
Power = Current x Voltage
What is this formula used for?
P=IV
Electrical Power
What does each electron flowing through a circuit or wire have?
Energy
How much energy depends on?
The voltage applied
What do electrons moving through a large voltage have?
More energy
On the other hand, what does a higher current mean?
More electrons passing by each moment
How can an equivalent rate of energy delivery be achieved?
By a smaller number of electrons each moment, with a larger amount of energy per electron, or a larger number of electrons each moment with a smaller amount of energy per electron
What is a Lower Current?
A smaller number of electrons each moment
What is a Higher Voltage?
A larger amount of energy per electron
What is a Higher Current?
A larger number of electrons each moment
What is a Lower Voltage?
A smaller amount of energy per electron
The formula not only applies to the rate of energy delivery but also to?
The rate of energy production and to the rate of energy consumption
What is the rate of energy delivery known as?
Power found in long distance power lines
What is the rate of energy production known as?
Power provided by a generating plant
What is the rate of energy consumption known as?
Power usage of energy production
Why is the word consumption a little bit misleading?
Because energy is never used up but just changes forms
A forty watt(40 W) light bulb doesn’t really use up 40 joules every second, what does it do instead?
Transforms 40 joules of electrical energy to 40 joules of light and heat energy each second
Note 
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