Lesson 3/Learning Event 1
FIGURE 20. VOLTMETER OPERATION.
CAUTION
Always remove all jewelry, such as wristwatches and rings, before you make
any test on electrical equipment. These metal items could cause you to be
shocked or burned.
The voltmeter, which has two connections, is connected to the electrical circuit in the following
manner. One connection is connected to the positive side of the circuit and the other is connected
to the negative side of the circuit. These connections then become the positive and negative sides
of the voltmeter. By connecting the voltmeter in this manner, equal voltage is applied to both the
voltmeter and load. The flow of electricity or current now has two paths to follow. One path is
through the load, and the other path is through the meter. The wires in the meter are very long,
and small in diameter, making the resistance high. This means very little current will flow through
the meter.
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