If the given graph represents a wire with a sensory area of 3.75cm ^ 2, determine the slope and resistivity
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A: R=ρLπd2/4=4ρLπd2=41.68×10-8Ω⋅m22 mm10-3 m1 mmπ1.628 mm10-3 m1 mm2=1.78×10-4 ohm
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If the given graph represents a wire with a sensory area of 3.75cm ^ 2, determine the slope and resistivity.
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- (a) What is the resistivity of the wire? (b) What material is the wire made of? You will have to look up the various resistivities.A light bulb filament is made of tungsten wire with a resistivity, at room temperature (20°C), of 5.6 x 10-8 Q.m and a temperature coefficient of 0.0045 (°C)-1 The wire is 50 cm long and has a diameter of 45 Um. (a) What is the resistance of the filament at room temperature (20°C)? (Put this answer in the box) (b) What is the resistance of the filament at a typical operating temperature of 3000°C ? Answer: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.
- An iron wire has a resistance of 2.50 N at 33.0°C. Determine its resistance (in 2) at 433°C. The temperature coefficient of resistivity for iron wire is 5.00 × 10-3 (°C)-1. (Assume that the temperature coefficient of resistivity was measured using the reference temperature 20°C.)you are working on a lab was given a task by your superbisor to determine the density of the mayerial which he wanted use in a circuit. Material he was given was very skinny wire with a mass of 0.001kg length of 2.3 x 10^3 m and having a resistance of 2.71 x 10^6 ohm. Knowing the resistivity of the material as 2.44 x 10^-8 ohms*m determine the density of the materialA number 14 copper wire has a diameter of 1.628 mm. Calculate the resistance of a 43.0 m long piece of such wire.(Use 1.72×10-8 Ωm for the resistivity of copper.)