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- Voltmeters, also called
- potentiometers, measure the
- voltage drop between two points
- in a circuit. The voltmeter is
- placed in parallel to these two
- points. The equation for the
- circuit becomes:
-
-
-
-
-
-
- Where is the resistance of the voltmeter.
- To minimize the effect of the voltmeter on
- the dynamics of the circuit, the net resistance
- of the voltmeter is designed to be very high.
- represents a typical value.
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-