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, Student Value Edition Plus Mastering Engineering with Pearson eText -- Access Card Package (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