Ask Your Teacher An electric utility company supplies a customer's house from the main power lines (120 V) with two copper wires, each of which is 34.0 m long and has a resistance of 0.109 Ω per 300 m. (a) Find the potential difference at the customer's house for a load current of 116 A.

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:

Where:

: 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.

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