What length of gold wire, of radius 0.27 mm, is needed to make a 15.5 Ω resistor, if the resistivity of gold is 2.44×10-8 Ω·m? The length, L =
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What length of gold wire, of radius 0.27 mm, is needed to make a 15.5 Ω resistor, if the resistivity of gold is 2.44×10-8 Ω·m?
The length, L =
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- At 20 degrees C, a gold wire of length 95 m with a diameter of 1.6 mm is connected across a 15 V dc source. What is the current in the wire? resistivity of gold at 20 degrees C = 2.24 x 10-8 olhm meters, temperature coefficent = 0.0083 1/KSuppose you're using a copper wire that has a radius of 0.5 mm, is 3.8 m long, and has a resistivity p=1.7 x 10 8 N- m. What is the resistance of the wire in Ohms?A wire has a diameter of D = 0.95 cm and is L = 5.5 m long. When connected to a V = 24 V source the wire passes a I = 35 A current. What is the wire's resistivity in Ω⋅m?
- I have a 150 m copper wire that has a resistance of 80.0 (I really do). Assuming the resistivity of copper to be 1.68 x 10^-8 ohm, calculate the thickness (diameter) of the wire.A copper wire of radius a = 0.240 mm has an aluminum jacket of outer radius b = 0.329 mm. There is a current i = 1.57 A in the composite wire. Take the resistivity for copper and aluminum to be 1.69 × 10-8Ω·m and 2.75 × 10-8Ω·m. Calculate the current in (a) the copper and (b) the aluminum. (c) If a potential difference V = 13.1 V between the ends maintains the current, what is the length in meters of the composite wire?How long is a tungsten wire if it has a diameter of 0.179 x 10-3m and a resistance of 2.63 k2? The resistivity of tungsten is 5.62 x 10-* 2-m. length of the wire: