2. The filament of a certain light bulb is made of tungsten and has a length of 0.48 m and a circular cross-section with a diameter of 0.062 mm. a. Calculate the resistance of the filament at room temperature. b. A 4.0 V voltage applied to the filament results in a 0.078 A current. Determine the temperature of the filament under these conditions.

Q: R, R2 If ɛ = 12 V, R1 = 3.0 Q and R2 = 6.0 Q, what is.. a. The total resistance of the circuit? b.…

A: Voltage, V = 12 VR1 = 3 ΩR2 = 6 ΩI = ?V2 = ?

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A: Given:The current across 2Ω resistor is  I = 743mA= 743×10-3A

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Q: What is the drift speed?

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Q: A 30V battery is connected in series with 5 20 Ohm resisters. a. Find the total resistance of the…

A: Given data *The battery voltage is V = 30 V *The given resistance is 20 ohm (a) The expression for…

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A:

Q: 7. The resistance of a uniform copper wire 50.0 meters long and 1.15 mm in diameter is 0.830 ohms at…

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Q: a. Of what material is a wire made, if it is 10 m long with a diameter of 0.25 mm and has a…

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Q: When running on its 11.4 VV battery, a laptop computer uses 8.3 WW. The computer can run on battery…

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Q: Part A What is the conductance of a 1.0-mm-diameter, 10-cm-long blood vessel filled with blood?…

A: The diameter of the conductor is 1.00 mm. The length of the blood vessel is 10 cm. The potential…

Q: This procedure is not recommended! You'll see why after you work the problem. You are on an aluminum…

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Q: 2. A person with body resistance between his hands of 10 ka accidentally grasps the terminals of a…

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Q: A 15 m copper wire has a cross sectional radius of 3mm. (P = 1.68×10^-8 at 20°C and A=0.0068) a.…

A: Given: The length of the wire is 15 m. The radius of the wire is 3 mm. The resistivity of the copper…

Q: A7.10-m-long iron wire is 1.50 mm in diameter and carries a uniform current density of 4.67 MA/m².…

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Q: A cylindrical conductor has resistance R0=40 ohms. If we decrease the radius of the conductor by a…

A: Given: The resistance of the conductor is 40 Ω. The voltage of the battery is 12 V. The internal…

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A: Given: d=5.4mm = 5.4*10-3 mI=1.1 mA = 1.1*10-3 AJ=JedgerR

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A: Resistance, R = 4200 Ω Capacitance, C = 0.81 nF => C = 0.81*10-9 F Current, I = 0.269 A

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Q: How long must a 0.64-mm-diameter aluminum wire be to have a 0.60 A current when connected to the…

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Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.