1 130 ) What is the resistance of an aluminum wire of length 1-10.9 m and...
1. (5 points) What is the resistance of an aluminum wire of length 1 = 10.9 m and diameter d = 1.30 mm? The resistivity of aluminum is 2.82 . 10-8 m.
A certain laboratory experiment requires an aluminum wire of length of 34.0 m and a resistance of 2.60 Ω at 20.0°C. What diameter wire must be used? (The resistivity of aluminum at 20.0°C is 2.82 ✕ 10−8 Ω · m.) ______ mm
(*) Find the resistance in ohms of an aluminum wire that is 15 m long and has diameter 0.0025 m.(**) suppose the current in the wire causes the temperature of the wire to increase 20 degree C. what is the new resistance of the wire?(p = 2.82 x 10^-8 ohms x m, a = 3.9 x 10^-3/degree C)
3.14 160 7. What is the resistance of a copper wire of length/= 10.9 m and diameter d= 1.30 mm? The resistivity of copper is 1.72 10-8Qm. o One brand of 12.0.Vautomotive battery used to be advertised as providing "600 cold-cranking amps."
The resistivity of aluminum is 2.82 ✕ 10−8 Ω · m. (a) Find the resistance of an aluminum wire (in ohms) with a radius of 1.33 mm and a length of 1.28 m. Ω (b) Calculate the volume (in m3) of aluminum in the wire. m3 (c) Suppose that volume of aluminum is formed into a new wire with a length of 2.62 m. Find the new resistance of the wire (in ohms). Ω
What is the resistance of a 61.1-m-long aluminum wire that has a diameter of 7.77 mm? The resistivity of aluminum is 2.83x 10-8 Ω . m. resistance:
Calculate the ratio of the resistance of 12.0 m of aluminum wire 2.4 mm in diameter, to 26.0 m of copper wire 1.8 mm in diameter. The resistivity of copper is 1.68× 10 −8 Ω⋅m and the resistivity of aluminum is 2.65× 10 −8 Ω⋅m .
Calculate the ratio of the resistance of 12.0 m of aluminum wire 2.0 mm in diameter, to 20.0 m of copper wire 2.5 mm in diameter. Assume electrical resistivity of aluminum is 2.65×10−8 Ω⋅m and electrical resistivity of copper is 1.68×10−8 Ω⋅m. Answer in RAl/RCu =
A particular application requires a 10 m length of aluminum wire to have a resistance 0.40 mΩ at 20∘C. If the resistance of the wire cannot vary by more than ± 7.5 % from its value at 20 ∘C, to what operating temperature range should it be restricted? What would be the operating range if the wire were, instead, made of copper?
1. (a) A current of 83.4 mA exists in a metal wire. How many electrons flow past a given cross section of the wire in 10.8 min? _______ (b) If a certain silver wire has a resistance of 7.80 Ω at 19.0°C, what resistance will it have at 54.0°C? _______ (c) A certain laboratory experiment requires an aluminum wire of length of 21.0 m and a resistance of 2.10 Ω at 20.0°C. What diameter wire must be used? (The resistivity...