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Kirchhoff's Law
f-alpha.net » Physics » Electricity » Measuring Current-Voltage » Let's go... » Experiment 6 - Measure Correct Voltage

Experiment 6 - Correct Voltage Measurement

There are basically two circuits to connect two real measuring instruments in order to simultaneously measure the current and voltage across the load resistor RL...

Circuit diagram correct voltage measurement of a load resistor.

Circuit correct voltage measurement of a load resistor. (Enlarge)

In the correct voltage measurement, the voltmeter displays the actual voltage at the load resistor RL. The ammeter however, shows a value too high. It shows the total current through RL and RiV!

In the next experiment, you look at the correct current measurement...

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