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A wire of length 1 km, has a
conductance of the same wire which is 3 km long?
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- Consider a power plant is located 60 km away from a residential area uses Q-gauge (A=42.40mm2) wire ofcopper to transmit power at a current of I = 100.00 A.How much more power is dissipated in the copper wires than it would be in superconducting wires?In a 100-m-long conductor of cylindrical cross-section (radius ro = 5 mm), the axial current density is J = î2 A/m². The conductivity is o= 5.8-107 S/m. Find a) the current flowing through the conductor, b) the voltage across the entire length of the conductor, c) the overall resistance of the conductor.copper conductor of length 15.24 m and diameter 2.05 mm carries a current of 15 A. Find the electric field intensity, drift velocity, voltage drop and resistance of the conductor. The conductivity and electron mobility in copper is given by 5.8 x 10^7 S/m and 0.0032 m^2/V.ssrespectively.
- A cylindrical silicon rod is 1.0 cm long and has a cross-sectional radius of 2.0 mm. What is the magnitude of the current passing through the rod when a voltage of 120 V acts on it? The resistivity of silicon is 2200 Ωm.A metallic wire with resistance 8 0, crosS-sectional area 8.2x10 m², and conductivity o= 5.81×10 0 m mV/m) inside the wire is; -1 is connected to a battery of & = 14 V. The electric field E (in 3.An independent and constant current source is supplying 0.6 ampere to a uniform copper conductor with length 40 mm, inner radius 7 mm, and outer diameter 20 mm. If the resistivity and the electron concentration of the conductor are 2.4 x 10-8 ohm-meter and 6.4 x 1024 electrons per cubic meter, respectively: a. The drift velocity in the conductor; b. The voltage across the conductor;
- The lengths of two conductor wires made of different materials are L1-2L2 and The resistors are given as R1=2R2. The cross-sectional area of the first wire is 0.025 m2 and the second the cross-sectional area of the wire is 0.050 m²is. What is the resistivity ratio (rl/r2) of these two wires?A copper transmission line is to be replaced by one of aluminum having the same total resistance. If the cross-sectional area of the copper wire is 800 MCM, what would be the cross-sectional area of the new aluminum wire?A material is formed into a long rod with a square cross-section 0.50 cm on each side. When a 100 V voltage is applied across a 20 m length of the rod, a 5.0 A current is carried. a) What is the resistivity of the material? ρ = _______ Ω m b) Is the material a conductor, an insulator, or a semiconductor?
- A copper transmission line is to be replaced by one of aluminum having the same total resistance. If the cross- sectional area of the copper wire is 500 MCM, what would be the cross-sectional area of the new aluminum wire?A special copper extension cord has length L = 5.25 m and rectangular cross-section given by width w = 0.500 cm and small length = 0.300 cm . Between the ends of the cord there is a voltage difference given by V+ - V- . The current I = 10.0 (A) . See diagram below . The copper resistivity ρ = 1.72x10 -8 ohm-m. (a) What is the voltage difference V+ - V-? Does your answer seem reasonable? Explain.(b) How much heat is generated (in Joules) in a time period of 3.00 minutes? (c) What is the magnitude E of the electric field in the extension cord?A 24 m length sample of an unknown metal wire is connected to a known ?= 0.56 Ω resistor and a ?= 24 V battery as shown. The unknown metal wire's cross-sectional radius is 0.0011 m. The voltage across the known resistor is measured to be 9.9 V. What is the wire sample's conductivity (in 1Ω⋅m)?