An unknown wire in a circuit has a circular cross-section with diameter 3.8 mm. It carries a current of 4.2 mA. If you assume the drift velocity in this wire is 1 × 10-2 cm/s, what is the density of charge carriers per cubic centimeter?  If the conductivity in this wire is 3.5 × 106 Ω-1 m-1, what is the average time between

Q: a given fluid, positive ions, each with 1 excess protons, move to the right at a steady rate of 1.3…

A: First we convert the no of ions into its equivalent  charge then by dividing time we get the current…

Q: current of I = 4.6 A is passing through a conductor with cross sectional area A = 3.5 × 10-4 m2. The…

A: Given  Current I = 4.6 A   Cross sectional area A =3.5 × 10-4 m2   Number density n =1.2 × 1027…

Q: A 190-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,210 A.…

A: Length of transmission line (L) = 190 km = 190000 m Diameter of the transmission line (d) = 2 cm…

Q: The magnitude J of the current density in a certain wire with a circular cross section of radius…

A:

Q: A 170-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,240 A.…

A:

Q: Consider a wire made of copper with conductivity 6.0 × 10' n'm', which has a circular cross-section…

A: Solution: The electric field in terms of conductivity and current density is given by Ohm's law.…

Q: In a given fluid, positive ions, each with 2 excess protons, move to the right at a steady rate of…

A:

Q: Whale and Kanmuro are two islands located in the Chimera archipelago. These two are separated by a…

A: a. the current at the full capacity can be expressed as So the current at the full capacity is the…

Q: What is the drift speed?

A: Given: Electric field is E=1.7×10-3 V/m Current in wire is I=3.5×1017 elec/s Diameter of wire is…

Q: A conductor has a cross- sectional area of 2.3x106 m2 and the number of free electrons per unit…

A:

Q: The space between two metallic coaxial cylinders of length L=0.45 m and radii a=1.3 cm and b=2.3 cm…

A:

Q: What is the steady-state current I, in units of Ampere, (steady-state current= current when you wait…

A:

Q: A conducting rod with a circular cross-section (this rod is a cylinder) has a radius of 10 mm and is…

A:

Q: A high voltage transmission line of diameter 3.73 cm and length 3.76189 km carries a steady current…

A: Given data The diameter of the transmission line is: d = 3.73 cm = 0.0373 m The length of the…

Q: A 250-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1,070…

A:

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

A: let the density of the electrons is denoted by n, the charge of electrons is denoted by e, the…

Q: wire has a diamter of D=0.65 cm and is L=6.5 m long. When connected to a V=14 V source the wire…

A:

Q: 1.00 M2 A conducting sphere is charged by an emf source & through a 1.00 MQ resistor. When the…

A: Given Resistance is R=1.00×106 Ω Charge is Q=1.00×10-6 C Current is I=1×10-3 A Permittivity of free…

Q: electric current of I = 0.266 A runs though a wire. How many electrons flow past a particular point…

A:

Q: A potential difference of 3.12 nV is set up across a 2.31 cm length of copper wire that has a radius…

A: Potential difference or voltage is Length of copper wire is Radius of wire is Time is Resistivity of…

Q: What is the steady state value of the current through the battery

A:

Q: In cylindirical conductor of radius 2 mm and length 2 m, the current density is non-uniform and is…

A: Given: The radius of the cylinder is 2 mm.            The length of the cylinder is 2 m.  To…

Q: An aluminum wire having a cross-sectional area of 3.90 x 10-6 m² carries a current of 3.00 A. The…

A: The cross-sectional area of the wire is The current in the wire is The density of aluminium is We…

Q: In a given fluid, positive ions, each with 2 excess protons, move to the right at a steady rate of…

A:

Q: What is the steady-state current I, in units of Ampere, (steady-state current= current when you wait…

A: Given:  R1 = 7 ohms R2 = 19 ohms ε = 10 V We have to find steady-state current I passing through…

Q: Consider a wire made of copper with conductivity 6.0 × 107 Ω-1m-1, which has a circular…

A:

Q: A 2.0 cm long tungsten filament in a florescent light bulb has a radius of 0.3 mm. Assume constant…

A: A 2.0 cm long tungsten filament in a florescent light bulb has a radius of 0.3 mm. cross sectional…

Q: A copper wire has a cross-sectional area of 3.31× 10-6m². It carries a constant current of 10.0 A.…

A: Given value--- Area = 3.31 × 10-6 m2 . Current = 10 Amp. density of copper = 8.92 g/cm3 . molar…

Q: An electric current in a conductor varies with time according to the expression I(t) =…

A: Electric current is generated due to the flow of charges. It is the rate of change of charge with…

Q: A 310-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1,030…

A:

Q: The quantity of charge Q that has passed through a surface of area 6.00 mm2 varies with time…

A:

Q: The quantity of charge through a conductor is modeled as Q(t)=(4.7)t4+(−1.2)t+(6.8) C What is the…

A:

Q: A 340-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,230 A.…

A:

Q: The electric charge that moves through a conductor varies in accordance with the equation q(t)…

A: Given, The electric charge that moves through a conductor varies in accordance with the equation…

Q: In a given fluid, positive ions, each with 1 excess protons, move to the right at a steady rate of…

A:

Q: A 270-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1,210…

A: Time = 30.2207 year Or Time = 30.2 year (approximately)Explanation:

Q: The figure below represents a section of a circular conductor of nonuniform diameter carrying a…

A:

Q: An electrical conductor designed to carry large currents has a circular cross section 2.40 mm in…

A: Given: The diameter of the wire is 2.40 mm or 2.40×10-3 m.           The length of the wire is 14.8…

Q: Current and Resistance Problem 18:   Consider two wires made of different materials. Wire A has a…

A: Please see the attached image for the solution.If there are queries or if the image is not loading,…

Q: A 270-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1,150…

A: Given values: Length of the line, l=270 km Diameter of the line, d=2.00 cm Current, I=1150 A Free…

Q: 1. Consider a cylindrical wire that has conduction electron density 6.0 x 1028 and radius 0.5 mm. An…

A: The average velocity obtained by charged particles (e.g. electrons) in a material owing to an…

Q: A 290-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1.230…

A:

Q: A conductor bar (0=5.8*107 S/m) of square cross section (DxD) has a circular bored along its length…

A: Answer              C. 38678.82

Q: A 320-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1,070…

A:

Q: The lengths of two conductor wires made of different materials are L1-2L2 and The resistors are…

A: The relation between resistance and resistivity is given byR = r×LA where R is resistancer is…

Q: A high voltage transmission line of diameter 2.55 cm and length 3.42167 km carries a steady current…

A:

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.