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1. Suppose that you measure the resistance of a resistor using a voltmeter, a current meter, and a battery. Suppose that the voltmeter reads 0.2 % high and the current meter reads 0.3 % low. What will be the percent error in your measurement of resistance? (Hint: If you do not know how to work this problem with abstract mathematics, try making up a numerical example that meets the given conditions.)

2. Why did you have such a large percent difference in the resistance of the lamp filament with the two different applied voltages? What physical condition of a conductor must remain constant for Ohm's law to apply?

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