447 a cylinder shaped carbon resistor is 8 cm in length and its ci9937
Search for question
Question
4.47 A cylinder-shaped carbon resistor is 8 cm in length, and its circular cross section has a diameter d = 1 mm. (a) Determine the resistance R. (b) To reduce
its resistance by 40%, the carbon resistor is coated with a layer of copper of thickness t. Use the result of Problem 4.44 to determine t.