A copper wire and an iron wire of equal length L and diameter d are joined and a potential difference V is applied between the ends of the composited wire. calculate a) the potential difference across each wire. b) The current density in each wire, c) the electric field in each wire. L=10 m, d=2.0 mm, V=100volt

Q: An aluminum wire having a cross-sectional area equal to 5.20 10-6 m² carries a current of 3.00 A.…

A: Given data, Cross sectional area A=5.20×10-6 m2. Current I = 3 A. Density of aluminum ρ=2.70 g/cm3.

Q: A service station charges a battery using a current of 5.7 A for 7.0 h. What is the total charge in…

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Q: 1 cm; N free electrons area A t N = 2.1×10²1, ♂ I Udrift = 2.6x10-3 cm/s. A copper wire contains N…

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Q: length of copper wire has a uniform cross-sectional area of 1.0 mm2. Assume that the drift velocity…

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Q: Wire C and wire D are made from different materials and have length Lc Lo = 2.3 m. The resistivity…

A: length of rod C and rod D  is Lc = LD = 2.3m Resistivity of rod C = 4.4 x 10-6 ohm-m Resistivity of…

Q: Wire C and wire D are made from different materials and have length LC = LD = 3.6 m. The resistivity…

A: Given, Wire C and wire D have length 3.6 m and diameter 1.06 mm and 0.73mm respectvily

Q: A) what is the magnitude of the current density in the wire J? B) what is the magnitude of the…

A: Area of the wire, A=(2.1 mm)2=2.1×10-3 m2=4.41×10-6 m2 Length of the wire, L=3.9 m Current carried…

Q: An aluminum wire having a cross-sectional area equal to 5.00 x 100 m² carries a current of 7.50 A.…

A: Given information: Area of cross-section(A)=5.00*10-6m^2 Current(I)=7.50A density of aluminum…

Q: An aluminum wire having a cross-sectional area equal to 3.70 x 10-6 m² carries a current of 7.00 A.…

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Q: The amount of charge q (in C) passing through a surface of 2 cm? changes over time as q = 4t3 +5t…

A: Solution:-Given thatSurface Area (a)=2 cm2=2×10-4 m2charge (q)=4t3+5t+6, (here, t is in seconds)t=1…

Q: Wire C and wire D are made from different materials and have length LC = LD = 4.3 m. The resistivity…

A: Since you have posted questions with multiple sub-parts, we will solve the first three for you. To…

Q: 3.(0) A battery has an emf of 9.0 V and an internal resistance of 0.0400 Q. What is the terminal…

A: i) Given data: The emf of the battery, ε=9.0 V. The internal resistance of the battery, r=0.0400 Ω.…

Q: An isolated conducting sphere has a 13 cm radius. One wire carries a current of 1.0000045 A into it…

A: The wire here is carrying the current into the sphere and other wire is drawing current out of it.…

Q: Under the influence of a constant E field of 700.0 N/C; 4.53* 1016 electrons pass through a 5.00 cm…

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

A: The electron passes with the drift velocity inside a wire. The current in terms of drift velocity is…

Q: An isolated conducting sphere has a 11 cm radius. One wire carries a current of 1.0000023 A into it…

A: It is given that,

Q: A current of 2 A flows through a gold wire with a radius of 3 cm and a length of 15 m. There are…

A: Current (I) = 2 A radius (r) = 3 cm Length (L) = 15 m number of free electrons per unit volume =…

Q: An aluminum wire having a radius of 7.53 mm and carrying a current of 86.2 mA is connected in a…

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Q: In a wire with a 2.63 mm² cross-sectional area, 5.51 × 1020 electrons flow past any point during…

A: Given data:  Cross sectional area (A) = 2.63 mm2 = 2.63×10-6 m2 Number of electrons (n) = 5.51×1020…

Q: Given the question statement: A. What is the maximum current in the wire? Express your answer with…

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Q: A) A long wire with a radius of 0.450 cm carries a current. The potential difference across a 3.60 m…

A: Current in the circuit = Potential difference/ Resistance of wire. Using relation between resistance…

Q: Is this the right answer?

A: Step-1:To determine: what is the charge at time t=6s.Given information:Between time t < 0 to t =…

Q: A wire is 100.0 m long and 0.800 mm in diameter. The first x meters of the wire is made of copper…

A: Given: The length of the wire is 100 m. The diameter of the wire is 0.800 mm. The potential…

Q: A long wire with a radius of 0.400 cm carries a current. The potential difference across a 3.60 m…

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Q: A certain resistor has a current of 1.8 A when a potential difference of 120 V exists across the…

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Q: At 20°C, a 7.5 m long copper wire has a cross-sectional diameter of 1 mm. If 15 A of current flow…

A: temperature, T=20 o C length of copper wire, l=7.5 m cross-sectional area, A=1 mm= 1x (10-3 m)2 = 1…

Q: Wire Cand wire D are made from different materials and have length Lc = LD = 2.6 m. The resistivity…

A: Concepts: The resistance of a wire of length L and cross-section A is given by,         R=ρLA…

Q: A cylindrical platinum wire is 0.0644 mm in diameter and 1.05 m in length. The wire carries a 1.05 A…

A: The diameter of the wire, d=0.0644mm=0.0644×10−3m.So its radius isr=d/2=0.0644×10−32m.So the…

Q: A 7-Ampere current runs through a 12-gauge copper wire (diameter = 2.05 mm) and through a light…

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Q: The table below shows four metals and their corresponding electron density n. A certain current…

A: Since current density J=nqVd  So Vd=J/nq

Q: A long wire with a radius of 0.450 cm carries a current. The potential difference across a 3.10 m…

A: The radius of the long wire is r= 0.450 cm= 0.45x10-2 m. The length of the wire section is L = 3.10…

Q: An aluminum wire having a cross-sectional area equal to 3.30 x 10 m² carries a current of 4.50 A.…

A: Given Data :Current I = 4.5 AArea of cross section A = 3.3×10-6 m2Density of aluminum ρ = 2.7…

Q: An aluminum wire having a cross-sectional area equal to 4.60 x 106 m? carries a current of 7.50 A.…

A: Given, Area(A)=4.60×10^-6m² Current (I)=7.50A Density=2.7g/cm³ Drift Velocity=?

Q: A wire is 0.81 m long and 0.88 mm² in cross-sectional area. It carries a current of 5.5 A when a 2.6…

A:

Q: The electromotive force from a battery drives a current around the circuit shown in the figure.…

A: here q=6,250μC=6,250×10−6C   T=10sec⁡

Q: An aluminum wire having a cross-sectional area equal to 2.00 x 106 m2 carries a current of 3.50 A.…

A: Given: Cross sectional area A = 2.0×10-6 m2 Current in wire I = 3.5 A. Density of aluminum wire =…

Q: between points on the wire that are 46 m apart is 3.7 V. (a) What is the electric field in the wire?…

A: given Current I = 2.5 A Potential difference V = 3.7 V Radius r = 2 mm = 2 × 10-3 m length l = 46 m

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.