Monday, May 14, 2012

Electrical energy is carried through a circuit by electrons. The energy each electron has is called electric potential energy. It is measured in volts. Because electric potential energy is measured in volts, it is often called voltage. A voltmeter is a device that measures voltage. It can be connected onto the energy source or the load. When you connect the device to the positive and negative terminals of a battery, it measures the difference in volts between both sides.

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