lab 1 worksheet

# Using the data given in order to determine the

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tolerance of 5%. Using the data given in order to determine the resistance of the first resistor, the resistance turned out to be 20 ohm and the tolerance of 5% resulted in an uncertainty of 1 ohm. The second of the two resistors have the color Orange-Orange-Red-Gold. Just like the first one, this resistor also has a 5% tolerance. The resistance of the resistor turned out to be 3300 ohm with an uncertainty of 165 ohm. When both resistors were measured, it turned out that both were within the specified tolerance as determined using the data provided. 3. (1 pt; Section 6) With the DMM still in parallel, reconfigure it to measure current. Does the bulb still appear to be the same brightness? The bulb appears to be very dim, close to no more light being emitted from it. What current is being read by the DMM? How does this differ from when it was connected in series? The current being read by the DMM now that the light bulb is connected in parallel is 1.835 0.015 A. However, when the light bulb was connected in series, the current being read was only 0.320 0.012 A. What effect has the DMM had on the amount of current flowing through the bulb? Why? Since the light bulb and the DMM are now connected in parallel, this caused the amount of current flowing and being measured to increase in comparison to when it the two were connected in series. 4. (1 pt; Section 6) Why would it be important to have the resistance high when measuring voltage and the resistance low when measuring current? Resistance opposes the flow of current therefore when measuring current, it is important to have low resistance. In addition, the resistance should be high when measuring voltage because the voltmeter when connected in parallel should take as little current as possible.
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