(II) A power station delivers 750 kW of power at 12,000 Vto a factory through wires with total resistance 3.0 Ω Howmuch less power is wasted if the electricity is delivered at50,000 V rather than 12,000 V?

(II) A power station delivers 750 kW of power at 12,000 Vto a factory through wires with total resistance 3.0 Ω Howmuch less power is wasted if the electricity is delivered at50,000 V rather than 12,000 V?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 19P

See similar textbooks

Related questions

Q: نقطة واحدة the fig. below is a second * .order circuit t=0 VR R Vin = E( Vc

Q: A flashlight bulb rated at 2.0 W and 3.0 V is operated by a 9.0-V battery. To light the bulb at its…

A: The current across the bulb can be obtained as P=VbulbII=PVbulb=2.0 W3.0 V=0.67A

Q: Given a frequency of 60HZ, determine the value of the voltage at time t=1s of the voltage source e =…

Q: 13-15. For the circuit below, i, = 1.4 A. Calculate ix and the total power dissipated by the…

A: io = 1.4 ALet, Ro = 16 Ω, R1 = 8 Ω, R2 = 4 Ω, and R3 = 2 Ω

Q: 10.0 N 20.0 N ww- 60.0 N -ww- 60.0 N 2.00 A 30.0 0 ww 5.0 Ω -5.0 V 10.0 V 15.0 N E 5.00 w - ww 20.0…

Q: Someone argues that a resistor R=100 Ω run by 5 V DC heats up faster than the same resistor run by 5…

Q: An initially uncharged capacitor is connected as shown. If the switch is closed at t-0, the time it…

Q: ind the voltage across the capacitor as a function of time for t>0 for the circuit in Fig. .72.…

A: Given: Voltage V=20 V resitance R1=5 ohm, R2=1 ohm L=0.25H, C=1 F To find: Voltage Across the…

Q: Can the terminal voltage of a battery ever exceed its emf?Explain.

A: emf of a cell is the potential difference across its terminal in open circuit. Terminal voltage of a…

Q: When the switch shown in Fig. 19–45 is closed, what willhappen to the voltage across resistor R1 It…

A: When switch is closed, R2 connect parallel in the circuit. Hence, equivalent resistance of the…

Q: When a portable fan is first turned on it draws 4.25 AA. After it has come up to speed it draws 0.50…

A: Given Data: Initial current drawn, Ii=4.25 A After speed up current drawn gets reduced. Therefore,…

Q: Given the circuit shown in Fig. 19–38, use the words "increases," "decreases," or "stays the same"…

A: (a) In the figure, resistor R7 is connected in the series with the circuit or other combinations.…

Q: A capacitor having a capacitance of 40 uF is connected across 250 V DC source. The charging current…

A: Charging current will drop to zero when-(c) capacitor is fully charged. It is because when capacitor…

Q: (II) The capacitance of a portion of a circuit is to be reducedfrom 2900 pF to 1200 pF. What…

A: C1=2900 pFC=1200 pFx=Capacitor of unknown capacitance

Q: If the current through a resistor is decreased by a factor of 4, how does this affect the power…

Q: Calculate the power dissipated by a 2Ω resistor if the potential difference across it is 1V.

A: Given Data : The resistance is given as R=2 Ω The potential difference is given as V = 1 V

Q: can you use this question to answer the d. power delivered to each resistor?

A: Power delivered to resistor = I2 R

Q: A power supply has a fixed output voltage of 12.0 V, but you need Vr = 3.5 V output for an…

A: V = 12 V R1 = 14.5 ohm VT = 3.5 V

Q: Find ve(t) in the circuit of Fig.7 if v,(t) = 2e-3tu(t).

Q: You are told that a certain voltage will be between 3 V and 5 V, and are given a non- autoranging…

Q: 1. In which circuits shown in Fig. 19–40 are resistors connected in series? (a) (b) w ww (c) (d)…

A: The resistances are treated as connected in series when the same current flows through the…

Q: Consider a capacitor C that is tully charged by a 10 V power supply. Loter on the resistor R, shown…

Q: What special relationship can be observed if you have a number of resistors with the same ohmic…

A: Given: What special relationship can be observed if you have a number of resistors with the same…

Q: (III) Suppose 2.0 MW is to arrive at a large shopping mallover two 0.100Ω lines. Estimate how much…

A: Given data: Input power, P=2 MW =2×106 W Equivalent resistance, R=0.100+0.100=0.200 Ω Voltage,…

Q: In a certain stereo system, each speaker has a resistance of 4.00 Ω. The system is rated at 60.0 W…

Q: "If the time duration of power supply is increased, then the electrical energy will be (keeping…

Q: Can watts be calculated by multiplying the total voltage by the current flow through the resistor?…

Q: If the current through a resistor is increased by a factor of 4, how does this affect the power…

A: Power through a circuit of resistance R and current I is given by, P=I2R Given : Current is…

Q: When two unknown resistors are connected in series with abattery, the battery delivers 225 W and…

Q: For the circuit shown in Fig. 19–46, what happens when the switch S is closed? (a) Nothing. Current…

A: In a series RC circuit, when a DC voltage supply is applied to a discharged capacitor, the capacitor…

Q: Consider a circuit with three resistors, R1 = 225 Ω, R2 = 155 Ω, and R3 = 135 Ω, connected in…

A: Given: Three resistors, R1 = 225 Ω R2 = 155 Ω R3= 135 Ω, connected in parallel with a 24.0-V…

Q: (II) Eight 7.0-W Christmas tree lights are connected inseries to each other and to a 120-V source.…

A: Given: The power of each bulb is 7.0 W. The number of bulbs is 8. The voltage is 120 V.

Q: Att= 0 the switch S is closed with the capacitor uncharged. If C = 20 µF, ɛ = 50 V, and R = 5.0 kN,…

Q: - (II) A bird stands on a dc electric transmission line carrying 4100 A (Fig. 18–34). The line has…

A: Current, I = 4100 A Resistance, R = 2.5 x 10-5 ohm

Q: Four 60-W 110-V bulbs are to be operated from a 230-V source. Determine the value of the resistance…

A: Power of each bulb = 60 W Voltage across each bulb = 110 V Voltage of the source = 230 V

Q: As more resistors are added in series across a constant voltage source, the power supplied by the…

A: Given data: Resistors added in series Voltage source is constant

Q: (II) How many time constants does it take for thepotential difference across the resistor in an LR…

A: Since, the potential difference across the resistor (V) is proportional to the current (I). So, the…

Question

(II) A power station delivers 750 kW of power at 12,000 V
to a factory through wires with total resistance 3.0 Ω How
much less power is wasted if the electricity is delivered at
50,000 V rather than 12,000 V?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

(III) Suppose 2.0 MW is to arrive at a large shopping mallover two 0.100Ω lines. Estimate how much power is savedif the voltage is stepped up from 120 V to 1200 V and thendown again, rather than simply transmitting at 120 V.Assume the transformers are each 99% efficient
(II) The capacitance of a portion of a circuit is to be reducedfrom 2900 pF to 1200 pF. What capacitance can be added tothe circuit to produce this effect without removing existingcircuit elements? Must any existing connections be brokento accomplish this?
A person with body resistance between his hands of 10.0 kΩ accidentally grasps the terminals of a 20.0-kV power supply. (Do NOT do this!) What is the power dissipated in his body?
A close inspection of an electric circuit reveals thata 480 ohm resistor was inadvertently soldered in the placewhere a 350 ohm resistor is needed. How can this be fixedwithout removing anything from the existing circuit?
A device (such as a light bulb) experiences a voltage drop of 4.0 V across it while a DC current of 4.0 mA flows through it. How much power does it dissipate? Help me with conceptualizing this question better. It has to do with P = VI
II) For the transmission of electric power from power plantto home, as depicted in Fig. 21–25, where the electric powersent by the plant is 100 kW, about how far away could thehouse be from the power plant before power loss is 50%?Assume the wires have a resistance per unit length of 5 x10-5Ω /m
Integrated Concepts Hydroelectric generators (see Figure 20.43) at Hoover Dam produce a maximum current of at 8.00 X 103 A at 250 kV. The water that powers the generators enters and leaves the system at low speed (thus its kinetic energy does not change) but loses 160 m in altitude. How many cubic meters per second are needed, assuming 85.0% efficiency?
If the current through a resistor is decreased by a factor of 4, how does this affect the power dissipated?
Integrated Concepts. A 12.0-V emf automobile battery has a terminal voltage of 16.0 V when being charged by a current of 10.0 A. At what rate (in oC/min ) will its temperature increase if its mass is20.0 kg and it has a specific heat of 0.300 kcal/kg. oC, assuming no heat escapes?
In a certain stereo system, each speaker has a resistance of 4.00 Ω. The system is rated at 60.0 W in each channel. Each speaker circuit includes a fuse rated at a maximum current of 4.00 A. Is this system adequately protected against overload?
You are told that a certain voltage will be between 3 V and 5 V, and are given a non- autoranging voltmeter. If the range selectors are labeled 200 mV, 2 V, and 20 V, which range do you select and why?
The timing device in an automobile's intermittent wiper system is based on an RC rime constant and utilizes a 0.500F capacitor and a variable resistor. Over whatrange must R be made to vary to achieve time constants from 2.00 to 15.0 s?