quiz5

  1. You are given a piece of wire made of material with resistivity=5.0E-8 Ohm meters. The length is 100 meters, and resistance is 0.10 Ohms. What is the radius of the wire (closest answer).
    a) 1.6E-5m
    b) 5.0E-5m
    c) 2.0E-3m
    d) 4.0E-3m
    e) 2.5E2m
    No answer given yet
  2. Given the wire in question 1. (R=0.10 Ohms). If 20A runs through the wire, with a "Voltage" at the input of 240Volts, what is the power lost in this wire? (Note the input voltage of 240 is not the voltage drop...not delta[V]).
    a) 4800Watts
    b) 40Watts
    c) 480Watts
    d) 400Watts
    e) 2.00Watts
    No answer given yet
  3. Given the wire and conditions of question 2, what is the power delivered at the far end of the wire?...or power "transmitted".
    a) 4800Watts
    b) 4760Watts
    c) 40Watts
    d) 400Watts
    e) 480Watts
    No answer given yet