R = ÷() Figure P27.85

Q: a) The time rate at which charge flows through the area is defined as the electric current. b) The…

A: a) True , because current is the time rate of flow of charge in unit area. b) False , because the…

Q: A 50.0-g sample of a conducting material is all that is available. The resistivity of the material…

A: The given values are,

Q: A 5.00A Current runs through a 12-guage copper wire (diameter 2.05mm) and through a light bulb.…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

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

A: Given data:  Radius (r) = 0.400 cm = 0.400×10-2 m Length (L) = 3.60 m Potential difference (V) =…

Q: he quantity of charge q (in coulombs) that has passed through a surface of area 1.95 cm2 varies with…

A:

Q: An aluminum wire with a diameter of 0.100 mm has a uniform electric field of 0.200 V/m imposed along…

A:

Q: If you have several wires made from different Ohmic materials with different lengths L, different…

A: A linear relation can be obtained between the current and the resistivity using a fixed emf of the…

Q: Figure P26.6 represents a section of a conductor of nonuniform diameter carrying a current of I=5.00…

A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…

Q: The two segments of the wire shown have equal diameters and equal lengths but different…

A: Let I denote the current, ρ1 and ρ2 denote the resistivity of the materials, l denote the length of…

Q: block of copper has sides of length 17 cm, 23 cm, and 41 cm. If the block is connected to a 7.7 V…

A:

Q: A copper wire has a diameter of 2.0 mm and a length of 3.0 m. It carries a current of 6.3 A. The…

A: "Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

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: A long wire with a radius of 0.350 cm carries a current. The potential difference across a 3.50 m…

A: From the question it is given that:  Radius of wire: r = 0.350 cm = 3.5 x 10-3 m Potential…

Q: A long wire with a radius of 0.450 cm carries a current. The potential difference across a 3.20 m…

A:

Q: Q2] A copper wire of 3mm diameter with conductivity of 5.8 10 (2.m)", and electron mobility of…

A: Here given a copper wire with mobility 0.0032 m² V sec. The electric field of 30 mVm. We have to…

Q: A rectangular block of copper has sides of length 14 cm, 26 cm, and 41 cm. If the block is connected…

A: The actual current, if the 8 volt source is a theoretical perfect source, can be done by calculating…

Q: A conducting wire of radius 1 mm is carrying a uniformly distributed current of 50 A. If the…

A: Given: Current, I = 50 Aelectron density, n = 8.1*1028 electrons/m3Radius of wire, r = 1 mm…

Q: A material is formed into a long rod with a square cross-section 0.50 cm on each side. When a 100 V…

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Q: A piece of 14-gauge copper wire 0. 163cm in diameter is 1 4.0m long. (a) What is its resistance? (b)…

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Q: A 120 V potential difference is applied to a space heater that dissipates 438 W during operation.…

A:

Q: A block of carbon is 3.0cmlong and has a square cross- section whose sides are 0.50cmlong. A…

A: Given information: Here, l is the carbon block’s length, a is the side of the square cross-section,…

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

A:

Q: current of I = 1.1 A is passing through a conductor with cross sectional area A = 3.5 × 10-4 m2. The…

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Q: (a) A 34.5-m length of copper wire at 20.0°C has a radius of 0.25 mm. If a potential difference of…

A:

Q: A current of I = 3.6 A is passing through a conductor with cross sectional area A = 6.5 × 10-4 m2.…

A: Drift velocity is given by,                   vd = IneAHere,           I is the current flown…

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

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Q: An aluminium wire with a diameter of 0.100 mm has a uniform electric field of 0.200 V/m imposed…

A:

Q: A typicalcell membrane is 8.0 nm thick and has an electrical resistivity of1.3 * 107 Ω # m. (a) If…

A: Thickness,  L = 8 nm = 8 x 10-9 m  Resistivity = 1.3 x 107 Ω  m Area, A = 1 mm x 1 mm = 10-6 m2…

Q: Consider a wire made of copper with conductivity 6.0x10^7 omega^-1m^-1, which has a circular…

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Q: An aluminum wire with a diameter of 0.100 mm has a uniform electric field of 0.200 V/m imposed along…

A:

Q: half its initial value, how long (in terms of T) does it take for the stored energy to drop to half…

A: Given: A capacitor discharge through a resistor and it takes Time t for charge of capacitor and at…

Q: a. What are conductivity and resistivity of a material? b. A capacitor can store an energy. Which…

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Q: Consider a wire of a circular cross-section with a radius of R = 3.07 mm. The magnitude of the…

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Q: A wire has a current density of 7.09 x 10° A/m². If the cross-sectional area of the wire is 2.11…

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Q: A rectangular block of copper has sides of length 11 cm, 22 cm, and 37 cm. If the block is connected…

A: according to the ohms law, I=VR                              {1}

Q: A conductive thin spherical shell with radius r1=1mm is placed in the center of another conductive…

A:

Q: An aluminum wire consists of the three segments shown in the following figure. The current in the…

A: Given that - Current in the top segment is 7.0 Amp. To Find - We have to determine the values of…

Q: A 14 gauge copper wire of diameter 1.628 mm carries a current of 12.5 mA. (a) What is the potential…

A: Given data The diameter of the copper wire is d = 1.628 mm. The current in the copper wire is given…

Q: A rectangular block of copper has sides of length 11 cm, 22 cm, and 37 cm. If the block is connected…

A: a) According to Ohm's Law is, V=IRI=VR

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.