Concept explainers
A copper wire has a diameter of 2.05 mm and carries a current of 15 A due solely to electrons. (These values are common in residential wiring.) Each electron has a charge of
Trending nowThis is a popular solution!
Chapter 1 Solutions
Electrical Engineering: Principles & Applications (7th Edition)
Additional Engineering Textbook Solutions
Electric Circuits (10th Edition)
Basic Engineering Circuit Analysis
Electric Motors and Control Systems
Electric Circuits. (11th Edition)
Engineering Electromagnetics
Principles Of Electric Circuits
- A copper wire 100 m long must experience avoltage drop of less than 1.5 V when a current of 2.5 A passesthrough it. Given that copper has an electrical conductivity of6.0E7 /(Ὠ-m), compute the minimum diameter of the wire.arrow_forwardCalculate the number if free electrons per cubic meter for silver, assuming there are 2.6 free electrons per silver atom. The electrical conductivity of Ag is 6.8x107 (Ω∙m)-1 and 10.5g/cm3, respectively. Also, determine the electron mobility of Ag.arrow_forwardFind the total current flowing (in ampere) in a cylindrical conductor (solid wire) 1 meter long and a diameter of 1mm. Given also that its charge density (De) is 1029 carriers/m3 and its carrier velocity (u) is 19.9x10-6 m/s.arrow_forward
- A copper wire of 3mm diameter with conductivity of 5.8 * 10 '(22.m)', and electron mobility of 0.0032 m V.Sec. is subjected to an electric field of 30mVm. Find (a) the charge density of free electrons, (b) current flowing in the wire, (e) the electron draft velocity.arrow_forwardA copper wire of 2mm diameter with conductivity of 5.8*10 7S/m and electron mobility of 0.00032m 2 / V-s is subjected to anelectric field of 20mV/m. Find(i) The charge density of free electrons(ii) The current density(iii) The current flowing in the wire(iv) The electron drift velocityarrow_forwardCalculate the linear charge density (nC/m) when the inner diameter of the pipe is 19mm and the wire diameter is 138 μm. a voltage of 866 V is connected between the wire and the pipe.arrow_forward
- A copper wire has a diameter of 2.05 mm and carries a current of 15 A due solely toelectrons. (These values are common in residential wiring.) Each electron has a charge of -1.60 x 10-19 C. Assume that the free-electron (these are the electrons capable of movingthrough the copper) concentration in copper is 1029 electrons/m³. Find the average velocity ofthe electrons in the wire.arrow_forwardAt 300 K temperature, the electron mobility for Si is 1400 cm2/Vs. If an electric field of 20 V/m is applied from the outside, estimate the drift velocity of the electrons inside the Si.arrow_forwardFind the total charge in mC of a cylindrical conductor (solid wire) 1 meter long and a diameter of 2mm. Given also its charge density (De) is 10^29 carriers/m^3 and its carrier velocity (u) is 19.9x10^-6 m/sarrow_forward
- A long copper wire carries a current of 15A which is evenly distributed in each cross-section of the wire. If the diameter of the wire is 3 mm, and the resistance per unit length is 4 ohm/km. Calculate the density of the magnetic and electric fields on the surface of the wire.arrow_forwardA coil of Nichrome wire is 23.0 m long. The wire has a diameter of 0.400 mm and is at 20.0°C. (a) If it carries a current of 0.600 A, what is the magnitude of the electric field in the wire?(b) If it carries a current of 0.600 A, what is the power delivered to it?(c) If the temperature is increased to 300°C and the potential difference across the wire remains constant, what is the power delivered? A coil of Nichrome wire is 23.0 m long. The wire has a diameter of 0.400 mm and is at 20.0°C. Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error.arrow_forwardQ6-Assuming that all of the valence electrons contribute to current flow, (a) calculate the mobility of an electron in copper and (b) calculate the average drift velocity for electrons in a 100 cm copper wire when 10 V are applied. Given( The lattice parameter of copper is 3.6151 10", copper is FCC, a = 5.89 x 105)arrow_forward
- Electricity for Refrigeration, Heating, and Air C...Mechanical EngineeringISBN:9781337399128Author:Russell E. SmithPublisher:Cengage Learning