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1. Given two pieces of copper wire which have same length but different diameters and based on equation R=ρ(L/A),determine the relative resistance of a piece of wire provided that its diameter is twice as long as that of the other one.

2. Given a resistor with bands 1=blue,2=orange,3=green,4=silver;find the resistance value and tolerance.

3. Comparing the measured 6.522kΩ with the calculated one , state the error percentage

and verify whether the Ohm's Law is correct.

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# Homework Help: About electrical

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