1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Vesna [10]
3 years ago
10

The voltage of electricity traveling away from a power plant is very high. How high may it be? Why is the voltage so high?

Physics
1 answer:
sashaice [31]3 years ago
8 0
- The voltage travelling away from a power plant through transmission lines is very high, and it is typically of hundreds of kilovolts (typical values are between 138 kV and 765 kV).

- The main reason to use these high values of voltage is to reduce power dissipation.
In fact, the cables that are used to transmit electricity have a certain resistance R which is fixed. The power generated from the power plant and that should be transmitted through the lines is P, and it is also fixed. 
The power dissipated through the cables is calculated as
P_{diss}=I^2 R =  (\frac{P}{V} )^2 R
where I is the current and V the voltage.
As it  can be seen, using higher voltages reduce the amount of power dissipated through the lines (while using higher currents will have the opposite effect).
You might be interested in
Plz help!
Strike441 [17]
72km/hr = 72000m/3600seconds(we convert km/hr to m/s
= 20m/s
Velocity= 20m/s
In 4seconds,distance covered=20x4= 80m
Therefore,an accident occurs because in 4seconds, the car would have moved past 20m
6 0
2 years ago
What is an example of an organism that reproduces
RideAnS [48]
Sea anemones; Coral; Starfish; Some non-flowering plants. Strawberry; Onion; Potato. Mushrooms are an example<span> of asexually </span>reproducing organisms<span>.

hoped i helped my fellow brainily user</span>
4 0
3 years ago
"What kind of electromagnetic radiation can be detected by a human body? I) visible light II) infrared light III) ultra-violet l
Vinvika [58]

Answer:

7. I and III only.

Explanation:

Only portions of the electromagnetic spectrum is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light which have wavelengths from about 390 to 750 nm that is; ultraviolet light and visible light.

4 0
3 years ago
A car is traveling south is 200 kilometers from it’s starting point after 2 hours. What is the average velocity of the car
Lesechka [4]

Answer:

100

Explanation:

take note that v=d/t (velocity is distance over(divided by) time, so in this case it would be 200 (distance) divided by 2 (time) = 100

6 0
3 years ago
Two scientists interpret the same set of data differently. How would the scientific community deal with this problem?
alexdok [17]
The correct answer would be D. A new experiment would be needed to be done in order to test the conclusions. In science there is no authority, data is the only thing that matters. So if we have two different conclusions from the same date the only solution is to perform more tests and more experiments to see what is correct.
7 0
3 years ago
Other questions:
  • Where would a car traveling on a roller coaster have the most potential energy
    5·1 answer
  • You ride your skateboard to school and tell all your friends your rode at speed of 25 miles per hour. They know this cannot be t
    7·2 answers
  • The volume of a cube is 64 meter cubic. what is the length of the side of the cube?
    13·1 answer
  • Suppose you increase your walking speed from 5 m/s to 14 m/s in a period of 3 s. What is your acceleration
    12·1 answer
  • Visible light occupies the majority of the electromagnetic spectrum? Ture or false
    8·2 answers
  • Technician A says that hill assist and hill descent controls are added features to some electronic stability control systems. Te
    9·1 answer
  • 2. What does the term reflection mean?
    11·1 answer
  • What acceleration will you give to a 24.5 kg
    5·1 answer
  • What is the kinetic energy of a 0.5 kg soccer ball that is traveling at a
    15·1 answer
  • When two identical resistors are connected in series across ideal battery, total power dissipated by them is P. Now both are con
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!