Microammeters and milliammeters
January 8th, 2010
To do this, we connect the microammeter between the earphone and the ground connection, so that any electricity that is going to flow throught the earphones to make noise is going to have to flow through the meter also. Some examples of microammeters and milliammeters can be seen in the photo below: To measure the current in our radio, we will need to have the am fm headphones current flowing through the meter. Since the amount of current is very small, we will use a meter that measures current in micro-amperes, or at most small fractions of a milliampere. If electicity were water, current would be the amount of water flowing , and voltage would be the water pressure in pounds per square inch.
Entry Filed under: Technology