a satellite maintains an orbit equidistant from the earth at all points along its orbital path hiw is the satellite affected by
1 answer:
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Answer:
The potential difference at the customer's house is 117.1 V.
Explanation:
a) The potential difference at the customer's house can be calculated as follows:
<u>Where</u>:
: is the potential difference at the customer's house
: is the potential difference from the main power lines = 120 V
: is the potential difference from the lines
The resistance, R, is:
Now, the potential difference at the customer's house is:
Therefore, the potential difference at the customer's house is 117.1 V.
I hope it helps you!
The resistance of a conductive wire is given by:
where
is the material resistivity
is the wire length
is the cross-sectional area of the wire
The length of the wire is quadrupled, so if we call L the original length and L' the new length, we can write
Similarly, the radius of the wire is doubled (r'=2r), so the new area is
And if we substitute into the equation, we find that the new resistance of the wire is
Therefore, R=R': this means that the resistance of the wire did not change.
where
The length of the wire is quadrupled, so if we call L the original length and L' the new length, we can write
Similarly, the radius of the wire is doubled (r'=2r), so the new area is
And if we substitute into the equation, we find that the new resistance of the wire is
Therefore, R=R': this means that the resistance of the wire did not change.