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22-9. An electrical power line using No. 4 copper wire has a resistance of 0.248 ohm...
"0000" gauge copper wire has a cross-sectional radius of 2.6cm. The resistivity of copper is 1.72...
"0000" gauge copper wire has a cross-sectional radius of 2.6cm. The resistivity of copper is 1.72 times 1-8ohmm. The circumference of the earth at the equator is 4.0 times 107m. What is the resistance of a piece of "0000"gauge wire that has been wrapped around the earth at the equator? 1200 ohm 840 ohm 320 ohm 0.032 ohm 0.084 ohm Select the following statement which is true about current flow. Select One of the Following: Current flows along lines of...
A copper wire of resistance R = 22 Ohm. is connected to a source of voltage...
A copper wire of resistance R = 22 Ohm. is connected to a source of voltage that mcreases with time as DeltaV(t) = v_0(1 - e^-at), where V_0 = 130 V and a = 0.57 s^-1 Part (a) Enter an expression for the power dissipated in the wire in terms of V_0, a, R, and t. Expression : P = Select from the variables below to write your expression. Part (b) Calculate the energy dissipated by the resistor in joules...
For a copper wire in a 2560m long transmission line to have a resistance of 1.00...
For a copper wire in a 2560m long transmission line to have a resistance of 1.00 ohm, what radius must it have? Edison suggested we use low DC voltages for household electricity. It a toaster has 12 resistive wires in parallel, and when connected to a 12.0V power I supply the toaster dissipates 1200W in total, calculate the current in the power supply, and the resistance of each wire. (Draw a schematic!)
A square loop of wire of side 2.6 cm and electrical resistance 79 ohm is near...
A square loop of wire of side 2.6 cm and electrical resistance 79 ohm is near a long straight wire that carries a current of 7.0 A in the direction indicated. The long wire and loop both lie in the plane of the screen. The left side of the loop is 9.0 cm from the wire. Part 1 out of 3 (a) If the loop is at rest, what is the induced emf in the loop? What are the magnitude...
Q3/17 Some copper wire has a resistance of 200 Ohm at 20.C.A current is passed through...
Q3/17 Some copper wire has a resistance of 200 Ohm at 20.C.A current is passed through the wire and the temperature rises to 90°C. Determine the resistance of the wire at 90°C, assuming that the temperature coefficient of resistance * .is 0.004/-C at 0 C 201.666 Ohm O 352.778 Ohm O 232.232 Ohm O 220 Ohm O 251.85 Ohm O 521.65 Ohm O Q5/// The maximum power dissipated in a 4 load is 100 w when connected to a d.c....
A typical overhead power line is bare wire at a high potential relative to ground. A...
A typical overhead power line is bare wire at a high potential relative to ground. A local line receives power at 3300 V with respect to the ground; the delivered voltage is slightly less, due to resistance loss in the wire. The wire is 10 km long, carries a current of 60 A, and has a resistance (made small to limit power loss) of 2.5 Ω. 1) Approximately how much power is lost due to the resistance of the wire?...
A number 16 copper wire has a diameter of 1.291 mm. Calculate the resistance of a...
A number 16 copper wire has a diameter of 1.291 mm. Calculate the resistance of a 43.0 m long piece of such wire. (Use 1.72x 10-8 sm for the resistivity of copper.) 5.650x10-1 Ohm You are correct. Previous Tries For safety, the National Electrical Code limits the allowable amount of current which such a wire may carry. When used in indoor wiring, the limit is 6.0 A for rubber insulated wire of that size. How much power would be dissipated...
A copper wire of cross-sectional area of 8.2x10^-7 m^2 has a resistance of 1.11 Ω. a)....
A copper wire of cross-sectional area of 8.2x10^-7 m^2 has a resistance of 1.11 Ω. a). How long is the wire? b). If a potential of 12.0 V is applied across the ends of the wire, what current will flow through the wire? c). How much electrical power is supplied to the spool? d). How many electrons (N) pass through this wire in 1.00 minutes?
3. If a certain tungsten wire has a resistance of 10.00 22 at 20.0 °C, what...
3. If a certain tungsten wire has a resistance of 10.00 22 at 20.0 °C, what resistance will it have at 43.0 °C? 4. The potential difference across a resting neuron in the human body is about 75.0 mV and carries a current of about 0.200 mA. How much power (in watt) does the neuron release?
Need help with these A current of 75.7 mA exists in a metal wire. How many...
Need help with these
A current of 75.7 mA exists in a metal wire. How many electrons flow past a given cross-section of the wire in 9.4 min? The fundamental charge is 1.602 Times 10^-19 C. Birds resting on high-voltage power lines are a common sight. A certain copper power line carries a current of 122 A, and its resistance per unit length is 2.39 Times 10^-5 1 Ohm/m. If a bird is standing on this line with its feet...
"0000" gauge copper wire has a cross-sectional radius of 2.6cm. The resistivity of copper is 1.72 times 1-8ohmm. The circumference of the earth at the equator is 4.0 times 107m. What is the resistance of a piece of "0000"gauge wire that has been wrapped around the earth at the equator? 1200 ohm 840 ohm 320 ohm 0.032 ohm 0.084 ohm Select the following statement which is true about current flow. Select One of the Following: Current flows along lines of...
A copper wire of resistance R = 22 Ohm. is connected to a source of voltage that mcreases with time as DeltaV(t) = v_0(1 - e^-at), where V_0 = 130 V and a = 0.57 s^-1 Part (a) Enter an expression for the power dissipated in the wire in terms of V_0, a, R, and t. Expression : P = Select from the variables below to write your expression. Part (b) Calculate the energy dissipated by the resistor in joules...
For a copper wire in a 2560m long transmission line to have a resistance of 1.00 ohm, what radius must it have? Edison suggested we use low DC voltages for household electricity. It a toaster has 12 resistive wires in parallel, and when connected to a 12.0V power I supply the toaster dissipates 1200W in total, calculate the current in the power supply, and the resistance of each wire. (Draw a schematic!)
A square loop of wire of side 2.6 cm and electrical resistance 79 ohm is near a long straight wire that carries a current of 7.0 A in the direction indicated. The long wire and loop both lie in the plane of the screen. The left side of the loop is 9.0 cm from the wire. Part 1 out of 3 (a) If the loop is at rest, what is the induced emf in the loop? What are the magnitude...
Q3/17 Some copper wire has a resistance of 200 Ohm at 20.C.A current is passed through the wire and the temperature rises to 90°C. Determine the resistance of the wire at 90°C, assuming that the temperature coefficient of resistance * .is 0.004/-C at 0 C 201.666 Ohm O 352.778 Ohm O 232.232 Ohm O 220 Ohm O 251.85 Ohm O 521.65 Ohm O Q5/// The maximum power dissipated in a 4 load is 100 w when connected to a d.c....
A number 16 copper wire has a diameter of 1.291 mm. Calculate the resistance of a 43.0 m long piece of such wire. (Use 1.72x 10-8 sm for the resistivity of copper.) 5.650x10-1 Ohm You are correct. Previous Tries For safety, the National Electrical Code limits the allowable amount of current which such a wire may carry. When used in indoor wiring, the limit is 6.0 A for rubber insulated wire of that size. How much power would be dissipated...
3. If a certain tungsten wire has a resistance of 10.00 22 at 20.0 °C, what resistance will it have at 43.0 °C? 4. The potential difference across a resting neuron in the human body is about 75.0 mV and carries a current of about 0.200 mA. How much power (in watt) does the neuron release?
Need help with these
A current of 75.7 mA exists in a metal wire. How many electrons flow past a given cross-section of the wire in 9.4 min? The fundamental charge is 1.602 Times 10^-19 C. Birds resting on high-voltage power lines are a common sight. A certain copper power line carries a current of 122 A, and its resistance per unit length is 2.39 Times 10^-5 1 Ohm/m. If a bird is standing on this line with its feet...
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