One hundred meters of a certain type of wire has a resistance of 7.2 Q. What is the resistance of 2.5 m of this wire?
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- A coil of wire has a resistance of 36.2Ω at 26 °C and 61.7Ω at 67 °C. What is the temperature coefficient of resistivity?The resistivity of a 100 m long copper wire is 1.72 x 10-80m. If the cross sectional area of the wire is 6 x 10-6m2, what is its resistance? 0.30 30 30 300Suppose 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?
- 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. ?.Gold is the most ductile of all metals. For example, 2 gram of gold can be drawn into a wire 2.4 km long. The density of gold is 19.3 x 103 kg/m3, and its resistivity is 2.44 x 10-8 Vm. What is the resistance of such a wire at 20.0°C? 2984 Ohms 1356 Ohms 1356250 Ohms 565OhmsPlatinum is commonly used as a resistance thermometer since Platinum is relatively free from corrosive effects and has a high melting point. Suppose that at 20 oC the resistance of a Platinum wire is 164.2 Ω. When this wire is placed in a solution, the resistance of the wire becomes 187.4 Ω. What is the temperature of the solution? The temperature coefficient of resistivity of Platinum is α = 0.00393.
- A particular wire has a resistivity of 3.3 x 10-8 · m and a cross-sectional area of 3.7 x 10-6 m². A length of this wire is to be used as a resistor that will develop 51 W of power when connected across a 20-V battery. What length of wire is required? kmA 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?A wire of diameter 0.550 mm and length 45.0 m has a measured resistance of 2.80 Ω. What is the resistivity of the wire?