In a copper wire of diameter 2mm, 3 x 1023 electrons flow in one second. Calculate the following: (1) Current (2) Current density magnitude (3) Electric field magnitude

Q: A current of 84.4 mA exists in a metal wire. (a) How many electrons flow past a given cross section…

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Q: When applying an electric field of magnitude 20.07 megavolts per meter across a resistor made from…

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Q: When 129 V is applied across a wire that is 8.5 m long and has a 0.30 mm radius, the magnitude of…

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Q: A small but measurable current of 8.3 x 1010 A exists in a copper wire whose diameter is 2.9 mm. The…

A: Current (i) = 8.3×10-10 A diameter (d) = 2.9 mm Radius (R) = 1.45 mm = 0.00145 m n = 8.49×1028 m-3

Q: A cylindrical resistor of radius 3.9 mm and length 2.0 cm is made of material that has a resistivity…

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Q: A potential difference of 13 V is found to produce a current of 0.39 A in a 3.6 m length of wire…

A: (a) Let V be defined as the potential difference and I be defined as the current. Let R be defined…

Q: A small but measurable current of 3.0 x 10 10 A exists in a copper wire whose diameter is 2.4 mm.…

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Q: (a) A 33.9-m length of copper wire at 20.0°C has a radius of 0.27 mm. If a potential difference of…

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Q: The current supplied to an air conditioner unit is 5 amps. The air conditioner is wired using a…

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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: In a 2 ns interval, 10^8 electrons are discharged from a capacitor.  What is the average current…

A: Given: time interval of discharge, t = 2 ns = 2 × 10-9 s numbers of electrons get discharged, n =…

Q: A current of 0.87 A flows through a copper wire of radius 3.53 mm; copper has 8.50x1028 free…

A: Drift speed is the average speed attained by electrons in a material due to electric field

Q: Two copper wires A and B have the same length and are connected across the same battery. If Rg =…

A: In this question we have to answer some questions related to the copper wires. Please give positive…

Q: A cylindrical resistor of length a, circular cross-sectional area of radius a, and resistivity…

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Q: (a) A 35.5-m length of copper wire at 20.0°C has a radius of 0.31 mm. If a potential difference of…

A: Given Data The length of copper wire is:L=35.5 m The initial temperature is:To=20°C The heated…

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

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Q: A copper wire has a circular cross section with a radius of 1.06 mm.   (a) If the wire carries a…

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Q: During the 4.8 min a 4.5 A current is set up in a wire, how many (a) coulombs and (b) electrons pass…

A: time (t) = 4.8 minutes = 4.8×60 seconds = 288 seconds current (i) = 4.5 A

Q: When a current flows in an aluminum wire of diameter 4.67 mm,4.67 mm, the drift speed of the…

A: Radius of the aluminium wire(r)=Diameter of the wire2=4.67×10-32=2.335×10-3mArea of the…

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: When applying an electric field of magnitude 20.22 megavolts per meter across a resistor made from…

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Q: The current supplied to an air conditioner unit is 2.50 amps. The air conditioner is wired using a…

A: The problem can be solved by using the concepts of current density and drift velocity. Current…

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

A: This is a question regarding the relationship between the current and current density. When the…

Q: A cylindrical resistor of length a, circular cross-sectional area of radius a, and resistivity…

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Q: A copper wire has a circular cross section with a radius of 1.96 mm. HINT (0) If the wire carries a…

A: Given data Charge of an electron is q=1.60×10-19 C Density of mobile charge is n=1.10×1029…

Q: A (b) If the wire is heated to 40.0°C while the 7.0-V potential difference is maintained, what is…

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Q: A small but measurable current of 8.2 × 1010 A exists in a copper wire whose diameter is 3.3 mm. The…

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Q: A small but measurable current of 1.2 × 10-10 A exists in a copper wire whose diameter is 2.5 mm.…

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Q: Calculate the drift velocity of electrons when a current of 1.5 A flows in a copper wire of…

A: Given data:  Current (I) = 1.5 A Cross-sectional area (A) = 5.0 mm2 = 5.0×10-6 m2 Electron density…

Q: A copper wire carries a current of 82.2 mA. (a) Find the number of electrons that flow past a given…

A: Recall Ne=Q Where N is number of electrons. And Q=it

Q: drift speed

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Q: A 35.1-m length of copper wire at 20.0°C has a radius of 0.23 mm. If a potential difference of 7.0 V…

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Q: A conductor has a cross- sectional area of 2.3\( \times \)10-6 m2 and the number of free electrons…

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

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Q: A small but measurable current of 7.6 x 10 10 A exists in a copper wire whose diameter is 3.2 mm.…

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Q: A wire is 1.3 m long and 0.97 mm2 in cross-sectional area. It carries a current of 5.0 A when a 1.6…

A: Write the provided values with suitable variable.

Q: small but measurable current of 4.4 x 1010 A exists in a copp nit volume is 8.49 × 1028 m3. Assuming…

A: Given:- The current I = 4.4 x 10-10 A The diameter is d = 3.3 mm  The number of charge carriers per…

Q: When applying an electric field of magnitude 20.07 megavolts per meter across a resistor made from…

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Q: A 14-gauge copper wire has a diameter of 1.508 mm. What magnitude current flows in amperes when the…

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Q: A current density of 8.50 x 10-13 A/m2 exists in the atmosphere at a location where the electric…

A: given that  current density is 8.50 x 10^-13 A/m2 and electric field is 176 V/m.

Q: An 18-gauge copper wire (the size usually used for lamp cords), with a diameter of 1.02 mm, carries…

A: Given: Let us consider the given data, Diameter, d=1.02 mm Constant current, I=1.67 A n=8.5×1028 To…

Q: In a 100-m-long conductor of cylindrical cross-section (radius ro = is J = î2 A/m². The conductivity…

A: Given:

Q: A silver wire is 34 mm in diameter and is 57 cm long. If it transfers charge in 1.79 minutes,…

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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.