Measuring Current And Voltage Experiment

Current is measured using an ammeter.

Measuring current and voltage experiment. To measure the current flowing through a component in a circuit an ammeter is always connected in series with the component. In this experiment you will use the dmms to measure dc voltage dc current and resistance. Now use the clip lead to short resistor r1 by connecting a to b. Make sure safety precaution.

1 3 1 use and limitations of dc voltmeters the first use of the dmm that we will consider is the measurement of dc voltage. Connect the arrangement of the three resistors in figure 1 to your lvps with the output set at 5 volts. Because measuring current in this manner requires the meter be made part of the circuit it is a more difficult type of measurement to make than either voltage or resistance. 3 measure current with the ammeter.

The measurement of current is rarely performed when troubleshooting as the circuit path has to be opened to insert the digital multimeter in series with the current flow. Also we know more about how capacitors and resistors work. Measurement of voltage current and resistance using the multimeters provided in the lab. As a result we got small amount of errors in our experiment.

Note 3 measuring voltage. We cannot measure exact values for voltage current and resistance due to other effect like heat air and balance of the hand. Multimeter measurements on dc resistive circuits objectives. In future experiments you will learn how to use the dmm to measure ac voltage and ac current.

Calculate the current and power dissipated through the resistors r2 and r3. Upon completion of this experiment i was able to. Some digital meters like the unit shown in the illustration have a separate jack to insert the red test lead plug when measuring current. Most of our errors are coming from measuring voltage current and resistance.

2 properly connect the voltmeter to measure voltage. However in this experiment we are simply trying to protect the led from over current so we will neglect the current characteristics of the led and choose the resistor value using ohm s law in order to be sure that the current through the led is safely under 20ma. Be aware measuring high voltage to measure high voltage we need special equipment. However if current is to be measured the red lead is inserted into one of the ampere jacks 10 amp 10a or 300 milliamp 300 ma input jack depending on the expected value of the reading.

1 set the dc power supply to a specific voltage. Also using a voltmeter we cannot measure the current flowing in the circuit. Proficiency creating electrical circuits using resistors wires and power supplies. 4 measure resistance with the ohmmeter.

Ee 3010 laboratory experiment 1 experiment 1. Measure the voltage between b and c. Note 2 measuring voltage.