Calculate the ratio of the resistance of 15.0 m of aluminum wire 2.3 mm in diameter, to 30.0 m of copper wire 1.7 mm in diameter. The resistivity of copper is 1.68 × 10–8N·m and the resistivity of aluminum is 2.65 × 10-8.m. Express your answer using two significant figures.
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- Compute the voltage drop along a 28-m length of household no. 14 copper wire (used in 15-A circuits). The wire has diameter 1.628 mm and carries a 13-A current. The resistivity of copper is 1.68×10¬8 N · m. Express your answer to two significant figures and include the appropriate units. HA ? V = Value Units %3DSuppose 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?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.
- A wire with a length of 2.0 m and a diameter of 1.0 mm has a resistance of 0.45 0. What is the resistivity of the material used to make the wire?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 19.5-g sample of nichrome with density 8.400 ✕ 103 kg/m3 is made into a wire 1.45 ✕ 103 m long. If the resistivity of nichrome is 1.000 ✕10−6 Ω · m, what is the resistance of this wire?
- The resistivity of a material used to make a round 950W resistor is 53W per unit length. If the resistor has a radius of 0.16 in, what is it’s length?Consider the following circuit diagram. The potential difference across the battery is 40.0 volts, and it supplies a current of 5.00 amperes to the circuit. There is a current of of 2.70 amperes flowing through R1. Resistor R2 has a resistance of 5.50 ohms. What is the resistance of R3? Answer in ohms to two decimal places, but do not include units in your answer.What is the resistance (in Ohms) of a wire made of a material with a resistivity of 3.3x 10-82. m if its length is 4 m and its diameter is 0.64 mm?
- 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? kmIf the 0.1-mm-diameter tungsten filament in a light bulb is to have a resistance of 0.25 2 at 20°C, how long should it be? The resistivity of tungsten is at 20°C is 5.6 x 10-8 22.m. L= 3.351 X 10 m No, that's not the correct answer.