One wire in a high-voltage transmission line carries 1 000 A starting at 560 kV for a distance of 270 mi. If the resistance in the wire is 0.500 n/mi, what is the power loss due to the resistance of the wire?
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- One wire in a high-voltage transmission line carries 1 000 A starting at 460 kV for a distance of 250 mi. If the resistance in the wire is 0.500 Ω/mi, what is the power loss due to the resistance of the wire?An 1470 W toaster and an 903 W microwave oven are connected in parallel to the same 15.0 A, 120 V circuit. (a) Find the toaster's resistance R (in ohms). Ω (b) If the microwave fails and is replaced, what maximum power rating (in W) can be used without tripping the 15.0 A circuit breaker? WAn immersion heater has a resistance of 5.0 ohms while drawing a current of 3.0 ampheres. What is the total electrical energy delivered to the heater during 4.0 minutes of operation?
- Your laptop has a power rating of 100 W. If your laptop represents a resistance of 1.91 kQ, what is the maximum current that your laptop can handle?A wind farm generates 2,286 kW of electrical power for a nearby community. The transmission wires have a total resistance of 1.06 Ω. Currently the electricity is generated at 5.07 kV, and a certain amount of energy is lost in transmission. If the voltage is increased to 9.25 kV, how much power, in kW, can be saved?In the circuit diagram R1 = 5R and R2 = 15R, where R = 14 Ω. The power dissipated in resistor 2 is P = 1.6 W. Part (a) What is the voltage across the battery in volts? Part (b) How much power, Ps, is the source supplying, in watts?
- A power station delivers 750 kW of power at 12,000V to a factory through wires with total resistance 3.0 ohms. How much less power is wasted if the electricity is delivered at 50,000V rather than 12,000VA turbine of a coal burning installation delivers 1,500 hp of mechanical energy to a generator. The generator then converts 80.0% of the mechanical energy into electrical energy. If the terminal potential difference of the generator is 2350 V, what current does it deliver (in A)?In a series RC circuit shown, the switch is closed and after a short time, the charge q on the capacitor is 5.2 x 10-5 C. What is the current in the resistor at this time?
- Four identical filaments are connected together in series inside a decorative light bulb. Each filament has a resistance of 2.30 Ohms. When the very bright light is on, a current of 7.55 A passes through the bulb. What is the total power dissipated in Watts?Please help: Your toaster has a power cord with a resistance of 2.1x10^-2 Ω connected in series with a 9.8 Ω nichrome heating element. The potential difference between the terminals of the toaster is 120 V. (A) How much power is dissipated in the power cord? Express your answer using two significant figures. (B) How much power is dissipated in the heating element? Express your answer using two dignicang figures.What current ? is needed to transmit 105 MW of power over a transmission line held at a voltage of 25.0 kV? ?= A Find the power loss ?loss that would occur in the transmission line if a 1.45 Ω line is used to transmit 105 MW of power. ?loss= W What percent loss does this represent? percent loss: