If someone could solve these problems and show how to get the answers that would

ID: 1298147 • Letter: I

Question

If someone could solve these problems and show how to get the answers that would be great!

1. 20 kW of power is delivered uising 15000 V pair of power lines.

A) What is the current??

B) If the resistance associated with each power line is 5 Ohms what is the voltage difference between the lines at the end?

2. Repeat the problems only transmit power at a lower voltage. 20 kW of power is delivered using 1500 V pair of power lines.

A) What is the current??

B) If the resistance associated with each power line is 5 Ohms what is the voltage difference between the lines at the end?

3. If the resistance associated with each power line is 5 Ohms what is the voltage difference between the lines at the end?

1) A) P = V*i...
current i = P/V = 20000/15000 = 1.33 A...
--------------------

B) v = i*R =1.33*5 = 6.67 V

2) A) i = P/V = 20000/1500 = 13.33 A

B) V =i*R = 13.33*5 = 66.67 V

3) 66.67 V

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