What is the diameter of a 1.00-m length of tungsten wire whose resistance is 0.38 Ω ?
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What is the diameter of a 1.00-m length of tungsten wire whose resistance is 0.38 Ω ?
The resistance of a piece of metal wire is given in terms of the resistivity of the metal as
Since the cross-section of a wire is circular, the area of a wire is given as
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- A potential difference of 14 V is found to produce a current of 0.36 A in a 3.4 m length of wire with a uniform radius of 0.45 cm. Find the following values for the wire. the resistance (in Ω) ______Ω the resistivity (in Ω · m) _______ mThe resistivity of aluminum is 2.82 X 10* -8 Ω. m. HINT (a) Find the resistance of an aluminum wire (in ohms) with a radius of 1.28 mm and a length of 1.03 m. (b) Calculate the volume (in m) of aluminum in the wire. m3 (c) Suppose that volume of aluminum is formed into a new wire with a length of 2.32 m. Find the new 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?
- Calculate the cross-sectional area, in mm2, of a piece of copper wire, 40 m in length and having a resistance of 0.25 ohm. Take the resistivity of copper as 0.02 × 10−6 ohm.Aluminum wire has diameter of 3 mm. How many meters of this wire would be needed to give resistance 2 Ω if the resistivity of aluminum is 2.8 × 10−8Ω. ?.A copper wire has a resistance of 50 ohms. What will be the strength of another copper wire whose cross section is double and length three times as long?