Power

Power is the rate at which work is done or the rate at which energy is transferred or converted. It is a measure of how quickly energy is used or transferred.

Types of Power

There are two main types of power:

1. Mechanical Power: This is the rate at which work is done in a mechanical system, such as a machine or an engine.
2. Electrical Power: This is the rate at which electrical energy is used or transferred in an electrical circuit or device.

Units of Power

The unit of power is the watt (W), named after James Watt, the inventor of the steam engine. One watt is equal to one joule of energy transferred per second.

Calculating Power

The formula for calculating power is:

Power (P) = Work (W) / Time (t)

or

Power (P) = Energy (E) / Time (t)

Study Guide

Here are some key points to remember about power:

• Power is the rate at which work is done or energy is transferred.
• It is measured in watts (W).
• The formula for calculating power is P = W/t or P = E/t, where W is work, E is energy, and t is time.
• There are different types of power, including mechanical and electrical power.

Remember to practice using the power formula and units to solve problems related to power.

[Power] Related Worksheets and Study Guides:

• Work, Power & Simple MachinesScience • Sixth Grade