A power station delivers 860 kW of power at 12,000 V to a factory through wires with total resistance 4.0 Ω .
Rounding to two significant
digits,
Difference =19000 W
A power station delivers 860 kW of power at 12,000 V to a factory through wires...
A power station delivers 740 kW of power at 12,000 V to a factory through wires with total resistance 3.6 Ω . How much less power is wasted if the electricity is delivered at 50,000 V rather than 12,000 V?
The graph below shows data for five different resistors
(identified by their color). Determine the resistance of each
resistor.
Ask Your Teacher 8. + 10 points Current: V vs I Graph My Notes The graph below shows data for five different resistors (identified by their color). Determine the resistance of each resistor VOLTAGE vs. CURRENT GRAPH V (V) 1000+ Ω A.) Rorange= 800 B.) Rgreen = 600 C.) Rblue Ω 400 D.) Rred 200 Ω E.) Rpurple I (A) 50...
A length of aluminum wire is connected to a precision 10.00-V power supply, and a current of 0.4212 A is precisely measured at 27.0 ∘C. The wire is placed in a new environment of unknown temperature where the measured current is 0.3804 A . --------------------------------------------------------------------------------------------------------------------------------------------------- For some applications, it is important that the value of a resistance not change with temperature. For example, suppose you made a 4.00 −kΩ−kΩ resistor from a carbon resistor and a Nichrome wire-wound resistor connected...
2. (15 pts) The reason why high voltage in power grid is used to transmit electric power is that it can reduce power waste along the transmission lines known as transmission loss. Suppose that a power station delivers 1,000 kW of power at 10,000 V to a city through wires with total resistance 3.0 22. How much power can be saved if the same power is delivered at 50,000 V?
1. A renewable energy system delivers 120 kW of three-phase power at 400 V (line-line) to a load with a 0.9 lagging power factor. If each power line has a resistance of R = 0.03 Ω and reactance of X = 0.04 Ω, determine the sending end voltage (line-line) of the three-phase power line connected to the renewable energy system for supplying power to the load. 2. A network service operator found that the voltage rise in a network due...
Your toaster has a power cord with a resistance of 1.8×10−2 Ω connected in series with a 9.9 Ω nichrome heating element. The potential difference between the terminals of the toaster is 120 V. Part A How much power is dissipated in the power cord? Express your answer using two significant figures. Pcord= W Part B How much power is dissipated in the heating element? Express your answer using two significant figures. Phe= kW
A generator supplies 5.0 103 kW of power. The output potential difference is 4500 V before it is stepped up to 510 kV. The electricity travels 400 mi (6.44 105 m) through a transmission line that has a resistance per unit length of 4.1 10-4 /m. (a) What percentage of the power is lost through transmission of the electrical energy along the line? % (b) What percentage of the power would be lost through transmission if the generator's output potential...
Lightbulb A is rated at 120 V and 100 W for household applications. Lightbulb B is rated at 12 V and 100 W for automotive applications. Part A What is the current through each bulb? Express your answer using two significant figures. Enter your answers numerically separated by a comma. IVO AXO ? IA, IB = A Submit Request Answer Submit Part B What is the resistance of each bulb? Express your answer using two significant figures. Enter your answers...
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Question 1 Not yet answered Marked out of 4.00 Flag question If the number density of electrons in a wire is n 1.00 x 1028 m-3, at what drift velocity must they travel through a wire of diameter d 0.560 mm to deliver a current of 7.20 A? Give your answer in mm s1 to 3 significant figures...