3. What is the electric resistance of a copper wire 225 mm long with a radius of 0.85 mm? 4. An Iron rod's diameter is 9.00 mm and its resistivity at 20 ° C is 9.71x108 Q.m. How long must the rod be to offer a resistance of 3.00 x 10³ Q?
3. What is the electric resistance of a copper wire 225 mm long with a radius of 0.85 mm? 4. An Iron rod's diameter is 9.00 mm and its resistivity at 20 ° C is 9.71x108 Q.m. How long must the rod be to offer a resistance of 3.00 x 10³ Q?
Chapter9: Current And Resistance
Section: Chapter Questions
Problem 70AP: A 10.00-meter long wire cable that is made of copper has a resistance of 0.051 ohms, (a) What is the...
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