Charge, Current and Potential Difference

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  • Created by: Alex
  • Created on: 11-03-13 16:12

Many sensors are powered using electricity.

 

-       Electronic sensors are designed to sense things we can’t sense.

-       Examples: Microphones sense sound waves, thermistors sense temperature.

 

Current is the rate of flow of charge.

 

Example: The current in a wire is like water flowing in a pipe. The amount of water that flows depends on the flow rate and the time.

 

Charge in coulombs (Q) = Current (I) x time

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