What is the resistivity value of a wire that can conduct 5 A of current across 30 V, if the wire's diameter and wire's length are 7 cm and 14 m respectively? < 100 r
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- In an experiment, the current through a wire is 0.200 A and the voltage across the wire is 0.800 V. The length of the wire is 0.500 m and its diameter is 1.128 mm. What is the resistivity of this wire? O 8.00x10^(-6) ohm/metre 8.00x10^(-6) ohm.metre 1.00x10^(-6) ohm.metre O 1.00x10^(-6) ohm/metre O none of them O 4.00x10^(-6) ohm/metre 8.00 ohm O400x10 (-6) ohm.metre O2.00 ohm O 1:00 onmWhen a current of 0.218 A is present in a wire 20.0 m inlength with cross-sectional area 8.19 x 10 -7 m 2 , the electric fieldinside the wire is 6.50 x 10 -3 V/m. What are (a) the resistance ofthe wire and (b) the resistivity of the material of which the wireis made?In an experiment, the current througha wire is 0.200 A and the voltage across the wire is 0.800 V. The length of the wire is 0.500 m and its diameter is 1.128 mm. What is the resistivity of this wire? 1.00x10^(-6) ohm.metre none of them 2.00 ohm O 1.00 ohm O 8.00 ohm O 1.00x10^(-6) ohm/metre O 4.00x10^(-6) ohm/metre O 8.00x10^(-6) ohm.metre O 4.00x10^(-6) ohm.metre O 8.00x10^(-6) ohm/metre
- 4 Dei U50. CTICE AND -- A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 38.8 Q at 20.0°C. If its resistance increases to 39.4 Q at 28.5°C, what is the temperature coefficient of resistivity?Problem 1. A piece of 1 4-gauge copper wire 0. 163cm in diameter is 1 4.0m long. (a) What is its resistance? (b) If a potential difference of 1.00 V is applied across the wire, what current flows in it? (c) What is the electric field in the wire? The resistivity of copper is 1.724∙10-8 Ohm-m.What is the resistivity of a wire if it is subiected to a 2.50 X 102 V/m electric field, and has a current density of 4.03X10-13 A/m2??
- CURRENT AND RESISTANCE Problem 1. A piece of 1 4-gauge copper wire 0. 163cm in diameter is 1 4.0m long. (a) What is its resistance? (b) If a potential difference of 1.00 V is applied across the wire, what current flows in it? (c) What is the electric field in the wire? The resistivity of copper is 1.724-10¹8 Ohm-m. Problem 2. Ohm's Law and Kirchhoff's Law Given the circuit below, calculate the current in each resistor, the total resistance and the total voltage of the circuit. 40 02 15 Q2 www ww +24V 10 Q2 20 Ωفير A conductor has a cross-sectional area of 2.3x 10-6 m and the number of free electrons per unit volume is 8.5x 10- electron/m. When the current is 8.6 A, find the drift speed (in mm/s) of the electrons. Use the charge of the electron to be 1.6x 10-19 C. Select one: OA 0.19 OB. 27.49 CC.036 C0.36.09 CE.027 pageA sheet of copper is 1 mm thick and has surface dimensions of 6 cm x 25 cm . If the long edges are joined to form a tube 25 cm in length, what is the resis- tance between the ends? The mass density of copper is 8920 kg/m³ and its resistivity is 1.7 x 10-8 2. m. Answer in units of 2.
- Copper is used in all household wiring. However, Aluminum, being much cheaper, is used in power distribution over large distances. The resistivity of Cu wire is 1.68x10-8 m and the resistivity of Aluminum wire is 2.65x108 2m. A typical power line might be 4.6 cm in diameter. Power lines transmit power at very high voltages so that relativley small current can be used. What is the power loss in a single line of Aluminum carrying a current of 140 A through a distance of 220 km? Number W. What is the power loss in a single line of Copper carrying a current of 140 A through a distance of 220 km? Number W. If the average cost of electricity in Ontario is $0.125 per kWh, the cost of copper is 12.6 dollars /kg, and the cost of Aluminum is 4 dollars/kg, how much time of continuous power transmission is required/(km of line) before the cost savings during use balances the extra cost of using copper. The density of Aluminum is 2700kg/m³ and the density of copper is 8960 kg/m³. Number years.empt=82392&cmid%3D91618&page%3=2 What is the resistance (in units of 2) of a wire made of a material with a resistivity of 3.2 x 10-82. m, if its length is 65.1 m and its diameter is 0.50 mm? Select one: OA. 10.61 OB. 36.65 OC. 4.10 OD. 2.65 OE. 23.63 Next pag 8:581 ENGDexter is maufacturing guy at laboratory inc. he is manufacturing the turnicated cone shape below. Iron has a resistivity of 1.0x10^(-7). Help dexter calculate the resistance between the two circular ends of the tunricated iron conductor below. 2.00 cm 20.0 cm 1 4.00 cm