A 220-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,180 A. If the conductor is copper with a free charge density of 8.5 x 1028 electrons per cubic meter, how many years does it take one electron to travel the full length of the cable? (Use 3.156 x 107 for the number of seconds in a year.) yr

Q: 3.8x1021 electrons pass through an area in a wire in 4 minutes. What was the average current?

A: Given data:  The number of electrons passed (n) = 3.8×1021 Time (t) = 4 min Required: The average…

Q: A copper wire 660 ft long has a resistance of 1.046 Ω. How long is a copper wire of the same size…

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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 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: 500mA of a current is flowing through a filament of a lightbulb. How many coulombs of charge move…

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Q: A piece of wire of length 48.9 cm made from a material of resistivity 1.6 ohm-metre was used to…

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Q: There is a net passage of 5.2  1018 electrons by a point in a wire conductor in 0.24 s. What is the…

A: Given: Number of electrons time of flow Charge on an electron Required: Current in the wire (I).

Q: The amount of charge "q" that has passed through a conductor varies as a function of time according…

A: The charge is given as :  q(t)=4sin2πt-11cos4πt+6 The instantaneous current that passes through the…

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Q: A wire has a diameter of 0.752cm and is 8.44m long. When connected to a 18.5V voltage source, the…

A: Given, Voltage, V = 18.5 V. Current, I = 57.3 A According to Ohm's law, Resistance,R=IV​. On…

Q: An 18-gauge copper wire with a diameter of 1.05-mm carries a constant current of 1.96-A. The charge…

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Q: A copper transmission cable 43 km long and 5.3 cm in diameter carries a current of 41 A. How much…

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Q: In the Bohr model of the hydrogen atom, an electron in the 2nd excited state moves at a speed of…

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Q: In a conductor the charge carriers are positive and/or negative. For example, the charge carriers in…

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Q: Calculate the drift velocity (in m/s) of electrons in a 6 gauge copper wire (which has a diameter of…

A: Given Diameter D=4.115 mm                 D=0.004115 mcurrent I=22.9 Adensity s=8.80×103 kg/m3

Q: An electric current is given by I(t) = 100sin(20rt), where I is in amperes and t is in seconds. What…

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Q: 320-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,090 A.…

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

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Q: A cylindrical copper conductor with temperature coefficient 4.3x10^-3 K^-1 at room temperature (20…

A: By creating a temperature difference between two quantities, a current can be generated.…

Q: A 230-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1,060…

A: Given Transmission line length, L=230km=230000m Current, I=1060A Diameter , d=2cm Radius,…

Q: A silver wire 2 mm in diameter transfers a charge of 13-mC in 6 minutes. Silver contains 5.8 × 1028…

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Q: 1. The magnitude J of the current density in a certain wire with a circular cross section of radius…

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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 total of 605 C of charge passes through a flashlight in 0.500 h. What is the average current in…

A: Charge , Q = 605 Ctime , t = 0.500 h

Q: A 210-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,060 A.…

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Q: A 330-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1,120…

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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: 14-gauge copper wire has a diameter of 1.636 mm. What magnitude current flows in amperes when the…

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Q: n a conducting wire, 3.17C of charge flow every 8.5 seconds.  What is the electric current in this…

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Q: Typical household currents are on the order of a few amperes.  If a 1.53 A current flows through…

A: The amount of current flowing through the leads of an electrical appliance is I= 1.53A. The amount…

Q: How many electrons pass through the filament during this time?

A: Given: Current is I=479 mA Time t=8.66 s The magnitude of charge on one electron is qe=1.602×10-19 C…

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

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Q: The amount of charge that passes through the filament of a certain lightbulb in 1.77 minutes is 8.22…

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Q: A rectangular block of copper having dimensions 63.5 cm x 63.5 cm x 92 cm. If the resistivity of…

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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 cylindrical conducting wire which is 65.42cm long, 64.26mm thick and resistivity of 5.85Ω.m, If…

A: Given Data, Length of wire L =65.42 cmthickness t = 64.26 mmresistivity ρ=5.85 Ωmcurrent I =12.9…

Q: 1.15 When a car has a dead battery, it can often be started by connecting the battery from another…

A: Given: v=12vI=40At=1.5min=90s

Q: What current flows through a 0.50 mm diameter rod of annealed Copper that is 90.0 cm long, when 12 V…

A: Resistance is given by: R = ρ*L/A ρ = resistivity of annealed copper = 1.72*10^-8 ohm-m L = length…

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

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

A: Given: The diameter (d) of the 18-gauge copper wire is 3 mm. The current (I) through the copper wire…

Q: An aluminum wire with a circular cross-section has a mass of 1.45 g and a resistance of 0.630 Ω. At…

A: Resistance of wire of area of cross section A and length l is given as R= ρl/A.

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

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

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Q: A metallic wire with resistance 8Q, cross-sectional area 8.2x10 m, and conductivity a- 5.81x10 o'mis…

A: Write the expression for the current.

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

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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…

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.