Measures Of V 3 And A 3 example essay topic

Purpose: To find the relationship between (1) total voltage and their individual amounts, (2) total current and their individual amounts, and (3) total resistance and their individual amounts. Procedure: We first gathered our materials that included a battery, resistors, an amp meter, and a volt meter. We then set up our lab, starting with the series circuit (see diagram). To start off the lab we measured the total current and total voltage. We used the same resistance throughout the whole lab, 10. After knowing our total amounts, we were able to begin the lab.

We started by getting the current and voltage of V 1 and A 1. We then moved the amp meter and voltage meter to get the measures of V 2 and A 2. We did this one last time to get the measures of V 3 and A 3. Following the series circuit, we set up the parallel circuit (see diagram).

After completing both parts of the lab we analyzed our results to see if there was a relationship and what errors might have or did occur. Data: R = Resistance A = Current V = Volts Series Circuit Parallel Circuit Current Total (A T) = . 9 Current Total (A T) = 1.2 Volt Total (V T) = 7 V Volt Total (V T) = 5 V R 1 = 10 R 1 = 10 A 1 = . 9 A 1 = . 4 R 2 = 10 R 2 = 10 A 2 = .

8 A 2 = . 38 V 2 = 3.5 V V 2 = 4 V R 3 = 10 R 3 = 10 A 3 = . 9 A 3 = . 4 V 3 = 3.5 V V 3 = 3.5 V Current, Resistance, and Voltage Lab Tricia Tierney May 4, 2003 Physics E Diagram: Calculations: Series Circuit Parallel Circuit. 9 = 7 V / R 1.2 = 5 V / R R. 9 = 7 V R 1.2 = 5 V R = 7.77 R = 4.16 Conclusion: From our lab results we found that in a series circuit there is a relationship between current, but we could not find a relationship with voltage or resistance due to some errors. In the parallel circuit we found that there is a relationship between current and between resistances, but we could not find any relationship between voltages due to some errors.

In the series circuit... A 1 = A T... 9 = . 9 A 2 = A T...

8.9 (only. 1 off) A 3 = A T... 9 = . 9 There is a relationship between the individual currents and the total current. Our results show that the numbers were very close or exact to what the total current is. With the voltage in the series circuit, we found no relationship.

This is because there was an error in our lab. We found the total voltage to be equal to 7 V, but the individual amounts were either 4 V or 3.5 V. We think this may be because we read the wrong numbers on the volt meter when gathering our data. In our lab we did not find this to be true, even though in science it is supposed to be. If we used that above equation our results would be 4 V + 3.5 V + 3.5 V = 7 V 11 V 7 V This was another error in our lab. By mistake, I think we read the wrong numbers on the volt meter so our results are no reliable or accurate. In our lab this was not the case.

If it was we would have got 4 + 3.5 + 3.5 = RT and 7 11. This was an error in our lab. We think we read the wrong numbers again on the meter when we first measured the resistance. This could alter all of our results. In the parallel circuit... 4 +.

38 +. 4 = A T 1.18 1.2 Only. 02 off Our total voltage was 5 V, but our individual voltages were 4 V or 3.5 V. We think that our results should have all been 4 V or 5 V, but we read the volt meter wrong. V 1 = V T... 4 V 5 V V 2 = V T...

008 off This was not an error in our lab because the numbers we got in our lab were extremely close when calculated out to the real amount of resistance. There could have been numerous errors that occurred in our lab. We might have accidentally read the numbers on the amp meter and the volt meter wrong. This could mean that our relationships might not be exactly correct; our numbers might be a bit off.

The battery we used could have been used for a long time. Over time, the voltage on a battery goes down when it is used over and over again. Another error could be that the places we put the wires on the metal were not in the same spots. Some places on the metal could be more charged than other places, which can cause some variations in our numbers.