AT219 Digital Multi Meter and Breadboard (Lab 2)

 In this lab, we used a battery pack, breadboard, resistors, wires, and a Digital Multi Meter to test resistance, voltage, and amperage. We created a circuit on the breadboard and switched out resistors of different resistances. 

We had 4x 1.5 Volt batteries powering the circuit. We could measure voltage in parallel with the circuit, meaning we could just touch the ends of the multi-meter to each side of the resistor. This would measure the voltage drop across that resistor. The voltage drop stayed constant in the circuit no matter what resistor we used. Increasing resistance would only decrease the current. We measured current by making the multi-meter a part of the circuit, and not putting it in parallel.

The picture below shows my lab partner and I measuring the voltage in parallel across the resistor.


The table below shows the measured values using different resistors.

Resistor

Resistance (R)

Voltage (V)

Current (I)

Power (P)

200W

198.3

5.48

0.0272 A

0.149

330W

327

5.48

0.016 A

0.0877

1kW

986

5.48

0.0056A

0.0307

10kW

9770

5.48

0.00055 A

0.00301


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