AT#9: MEASURING VOLTAGE WITH A MULTIMETER

INTRODUCTION TO THE PRACTICE EXERCISE

In this practical exercise, we will learn how to use a multimeter to measure the voltage between two points in a simple electrical circuit consisting of two resistors, R1 and R2, connected in series.

CIRCUIT DIAGRAM

The circuit consists of a 5V power supply from the Arduino connected to two resistors, R1 and R2. We will measure the voltage across each resistor.

Voltage Measurement Circuit Diagram

STEP-BY-STEP INSTRUCTIONS

1. Prepare the multimeter: Set the multimeter to DC voltage measurement mode (V⎓).
2. Connect the probes: Place the red probe at the point with higher electric potential and the black probe at the point with lower electric potential.
3. Measure R1: Place the two probes across the terminals of resistor R1 to measure the voltage across it.
4. Measure R2: Similarly, place the two probes across the terminals of resistor R2 to measure its voltage.
5. Verify the results: The sum of the voltages across R1 and R2 should equal the supply voltage (approximately 5V).