Problem 1. A copper wire of cross-sectional area 2.5 mm2 carries a current with a current density of 2.60 A/mm2 . The density of free electrons for copper is 9.5x1028 electrons per cubic meter. The resistivity of copper is 1.68x10−8 ·m. The charge of the electron is 1.6x10−19 C. (a) Calculate the current in the wire. (b) The magnitude of the drift velocity of electrons in the wire. (c) Find the electric field inside the wire.

Q: potential

A:

Q: A potential is placed across a wire. When the potential is 300 V and the wire is 14.5 m long, the…

A:

Q: 1. The total charge entering a terminal is given by q = 2e cos (6t), in uC. Determine the current at…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: copper conductor of length 15.24 m and diameter 2.05 mm carries a current of 15 A. Find the electric…

A: Given: The length of the conductor is 15.24 m. The diameter of the conductor is 2.05 mm. The current…

Q: A conductor has a cross-sectional area of 2.3×106 m² and the number of free electrons per unit…

A: Cross-sectional area is A = 2.3×10-6 m2 Electron density is n = 8.5×1028 electron/m3 Current, I =…

Q: a. What diameter of copper wire [p = 2.65 x 10^-8 ohm.m) should be used so that a 22.0 m length will…

A: Part (a) Given: The resistivity of copper wire is ρ=2.65×10-8 Ω·m. The length of wire is L=22.0 m.…

Q: Silicon is a semiconducting metal with a resistivity of 640 . m. HINT (a) Determine the current per…

A: Given value--- resistivity = 640 ohm m. voltage  = 4.92 V. length = 1.79 mm. We have to find---…

Q: has a current density of 6.01×106 A/m2. If the cross-sectional area of the wire is 2.91 mm2, what…

A: Given  Current density  J = 6.01 × 106 A/m2  Cross sectional area A = 2.91 mm2 = 2.91 ×10-6 m2…

Q: An aluminum wire with a diameter of 0.095 mm has a uniform electric field of 0.215 V/m imposed along…

A:

Q: Part A If there is an annealed copper wire with resistivity 0.172 nano ohm meters and a diameter of…

A: resistivity = 0.172×10-9 ohm - meter diameter = 2 mm radius = 1 mm Length = L electric field (E) =…

Q: A 100-m-long copper wire of radius 0.24 mmmm and mass 160 g is connected across a 1.5-V battery. The…

A: Given: length, l=100 m radius, r=0.24 mm=0.24×10-3m voltage, V=1.5 V resistivity, ρ=1.7×10-8Ω⋅m

Q: a current 2A flows in a copper wire over a length of 3 km and 1,1 mm.known copper conductivity is…

A:

Q: How long must a 0.54-mm-diameter aluminum wire be to have a 0.54 A current when connected to the…

A: Given that ,Diameter of the aluminium wire D = 0.54 mm = 0.54*10-3 mcurrent I = 0.54 Avoltage V =…

Q: A copper cylinder has a diameter of 20.0 mm and a length of 10 m. A potential difference of 100 V is…

A: Concept: To determine the Resistance of the cylinder we will use the formula R=ρLAhere,ρ=…

Q: A conductor has a cross-sectional area of 2.3x 10-6 m² and the number of free electrons per unit…

A: I = 8.6 A Q= 1.6 ×10-19C A =2.3 ×10-6 m² n = 8.5 ×1028 electron/m³ Now, Velocity = I /nAq V = 8.6 /…

Q: busbar made out of copper has a length of 12 inches. Its surface dimension is 1 cm by 1 cm. If the…

A: Given values:-  Length of copper,(L)=12 inch=12 x 0.0254 m=0.3048 m ----(1) [Using 1 inch=0.0254 m]…

Q: An 18-gauge copper wire with a diameter of 3-mm carries a constant current of 1.2-A. The charge…

A: Given data: diameter of copper wire=3(mm) current in the copper wire, I=1.2(A), charge concentration…

Q: A block of gold of volume 232 mm is used to make a wire 78.9 m long. What is the resistance (in 0)…

A:

Q: A germanium wire is having a resistance of 170 and a radius of 27mm. The resistivity (p) of silver…

A: Given radius of wire r = 27mm = 0.027 m hence area of cross section A= pie *r2 . A=pie*0.0272…

Q: The current passing through a copper wire is I=20 A. The resistivity of copper at room temperature…

A:

Q: What is the resistivity of a wire if it is subiected to a 2.50 X 102 V/m electric field, and has a…

A:

Q: 2. a) The resistivity of copper is 1.7241 x 10-8 (-m) at 20°C. What is the conductivity of copper at…

A:

Q: 2. A wire has a radius of 1.90 mm. If the current in the wire is 6.14 A, the drift velocity is 4.86…

A:

Q: When a current flows in an aluminum wire of diameter 4.57 mm, the drift speed of the conduction…

A: Given: Diameter, d=4.57 mm, radius r=4.75 mm2=2.285×10-3 m Drift speed ,vd=0.000291 m/s Conduction…

Q: cylindrical conducting wire which is 131.41cm long,  53.17mm thick and resistivity of 9.92Ω.m,  (a)…

A: Given h=131.41cm=1.3141m, d=53.17mm=53.17x10-3m Therefore radius r=d/2=26.585x10-3m ρ=9.92Ω.m

Q: 5. An iron wire has a cross-sectional area of 5.00 x 10-6m². Carry out the following steps to…

A: Given data The cross-sectional area of the wire is: A = 5 x 10-6 m2 The current in the wire is: I =…

Q: A conductor has a cross-sectional area of 2.3x 10 m and the number of free electrons per unit volume…

A: drift velocity is given by vd=IneA Here, I is the current flow n is the free electron density e is…

Q: Fill in the blank with the correct answer. Sami suggested replacing the copper wire used in the…

A:

Q: free electrons are there in a rectangular block of a conductor whose dimension is 8 m by 4 m by 3 m?…

A: We know that the formula of the drift velocity is given as  vd= IneAn=IevdA ------ eq 1  where I is…

Q: Q3.a.Calculate the current density for Aluminum wire has radius 1mm and current 1mA? 318.31A/m? b.…

A: Radius of wire (R) =1 mm = 0.001 m Current (i) = 1 mA = 0.001 A

Q: The current of an electron beam has a measured current of I=39.2 μA with a radius of 1.74 mm. What…

A:

Q: 2. The current density in a copper wire of diameter 1.5 mm ig 1.5x 10° A/m2. The number of free…

A:

Q: A metal object having a length (10m), cross section area (0.5 mm2), and resistance (0.5N) is…

A:

Q: 3.0 A battery has an emf of 12 V and an internal resistance of 0.0500 2. What is the terminal…

A: Given : Emf (E) = 12 V Resistance (R) = 0.0500 Ω Current (I) = 8 A

Q: A current of 4A passes through a wire. The number of electrons crossing a point in the wire in 5…

A: Given,I=4 At=5 mins= 300 sec

Q: An aluminum wire 1.291 mm in diameter (16-gauge) carries a current of 3 amps. Overall Hint a. What…

A: The diameter of the Aluminium wire, d=1.291 mm The current flowing through the wire, i=3 A

Q: Q1: A conductive wire has a resistivity of (0.649×10-8(Q.m)') at room temperature are (5.8x10» )…

A: Given- Conductivity σ=0.649×10-8(Ω.m)-1So,Resistivity ρ=1σ=10.649×10-8=1.54×108Ω.m Conduction…

Q: A 5.00 A current runs through a 12 gauge copper wire (diameter2.05 mm) and through a light bulb.…

A: Given, Current, I=5 A Diameter, d=2.05 mm No. of free electron, n=8.5×1028   We know, Current…

Q: Find the current density and drift velocity of free electrons when the particles travel on a copper…

A:

Q: A current of 1.6 A flows for 8.9 s through a conductor. Calculate the number of electrons that pass…

A:

Q: current of I = 7.3 A is passing through a conductor with cross sectional area A = 6.5 × 10-4 m2. The…

A:

Q: An aluminum wire with a diameter of 0.105 mm has a uniform electric field of 0.235 V/m imposed along…

A:

Q: 1. a) Find the electrical resistance of a 0.5 cm long, 22-gauge silver wire, if the electrical…

A:

Q: wire

A: Given: The potential difference across the wire = 4 Volts Length of the wire = 5 m Cross-sectional…

Q: drift speed

A:

Q: copper wire has a square cross section 2.3mm on a side. The wire is 4m long and carries a current of…

A: Given  side of cross section a = 2.3 mm  =2.3×10-3 m Cross sectional area A = a2  = (2.3×10-3)2  =…

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.