Physics
posted by Tim .
Compare two transmission lines: one at twice the voltage of the second. Which of the two lines is most advantageous to a utility company? How much is the advantage?

Physics 
bobpursley
Advantage has multi facets.
With twice the voltage, the joule heating will be 1/4 less if the same amount of power is transmitted (Power=V^2/load), or, four times more power can be transmitted with the same loss. Or, the area of the transmission lines can be 1/4 the original size (smaller, lighter wires) for the same power transmitted and losses. 
Physics 
Tim
Where can I find more information about the equation (Power=V^2/load)?

Physics 
bobpursley
This is Ohm's Law. Search Google on that.
Respond to this Question
Similar Questions

Algebra 1
1. Which line is the flattest (or is less steep)? 
Physics
100000W of power is delivered to the other side of a city by a pair of power lines with the voltage difference of 15000V. a) how much current flows in the lines? 
physics
please check: Two point charges, initially 1 cm apart, are moved to a distance of 3 cm apart. By what factor do the resulting electric and gravitational forces between them change? 
MATH
How can you determine if two lines are perpendicular? 
MATH
Post your 50 or more word response to the following in the assignment link: How can you determine if two lines are perpendicular? 
Physics
Power transmission lines often use a form of electric current called alternating current, but in many regions, such as the Province of Quebec, highvoltage directcurrent lines are used instead. Direct current is the kind of electric … 
Geometry
If two non parallel lines are perpendicular to two other straight lines , each to each . Show that the acute angle between the first pair of lines is equal to the acute angle between the second pair of lines. 
Physics
Two charges +q and −q are separated by a distance d=50 cm. The electric field lines for this system form the the wellknown pattern showed in the figure below. Consider two lines L1 and L2 lying on the same plane and leaving … 
intermediate algebra
two perpendicular lines intersect at (2,3) one of the lines has an xintercept of 2. what are the equations of both lines? 
Physics
A neighbourhood requires 1.5 x 10^5 w of electricity to power all homes during peak usage times. A stepdown transformer is used on the high voltage transmission lines to lower the voltage to 120v for household use. There are 25000 …