Electrical Power
The rate at which energy is changed from the electrical energy of moving charges to another form, expressed as a rate, per unit of time, is known as electric power.
Mathematically, electric power is defined as the product voltage and the current flowing, given as:
P = V × I
According to Ohm’s Law. V = I × R, therefore,
P = I2 × R
or
P = V2 / R
where,
P is the electric power,
I is the current flowing,
R is the resistance and
V is the voltage.
Check: Electric Energy and Power
Power
Power in Physics is defined as the time rate of the amount of energy converted or transferred. In the SI system (or International System of Units), Watt (W) is the unit of Power. Watt is equal to one joule per second. In earlier studies, power is sometimes called Activity. Power is a scalar quantity. Power is a function of Work done, therefore if a person works at a variable rate depending on the time of day, his power will likewise vary.
Let’s learn about Power, average power, units of power, and others in this Article.
Table of Content
- What is Power?
- Power Formulas
- Units of Power
- How do We Measure Power?
- What is Horsepower?
- Average Power
- Mechanical Power
- Electrical Power
- Calculating Power and Energy Consumption
- Solved Examples on Power