Using table 20.1 for values of the resistivity of copper, calculate the resistance of a copper wire 1 m long, and 1 mm in diameter. What would the resistivity be if:
(a) The wire had a 1/2 mm diameter.
(b) The wire was made of pure iron.
(c) The copper contained 0.5 percent silver.
(d) The copper contained 10 percent zinc.
You might also like to view...
In a Toyota Prius regenerative braking system, how many pressure switches are used?
A) One B) Two C) Three D) Four
Brakes that drag or fail to release can be caused by a ________
A) Plugged vent port (compensating port) B) Leaking secondary cup C) Failure of the residual pressure (check) valve D) Leaking primary cup
How is heat pump Heating Seasonal Performance Factor, HSPF, calculated?
A) HSPF is a measure of heating BTU per watt averaged for the entire heating season. B) HSPF is a measure of heating BTU per watt measured at one particular condition. C) HSPF is the ratio of heat output divided by heat input measured at one particular condition. D) HSPF is the ratio of heat output divided by heat input averaged for the entire heating season.
The notch on acetylene fittings indicates left-hand threads
Indicate whether the statement is true or false