Essay about ECET 110

995 Words Nov 8th, 2013 4 Pages
44. Why do you never apply an ohmmeter to a live network? (Boylestad 98)
Boylestad, Robert L. Introductory Circuit Analysis, VitalSource for DeVry University, 12th Edition. Pearson Learning Solutions, 11/2012. VitalBook file.

Answer: It will be an inaccurate measurement because there is already a current flowing inside of it. An ohmmeter measures the current from the voltage that’s been being put out. So by applying an ohmmeter to a live network it will have an confusion between the live network and an ohmmeter voltage.

http://wiki.answers.com/Q/Why_should_an_ohmmeter_never_be_used_on_an_energized_circuit

1. What is the voltage across a 220Ω resistor if the current through it is 5.6
…show more content…
Which will have the least?
b. Which resistor will have the most impact on the total resistance and the resulting current? Find the total resistance and the current.
c. Find the voltage across each element and review your response to part (a).
FIG. 5.93 Problem 9.

(Boylestad 178)
Boylestad, Robert L. Introductory Circuit Analysis, VitalSource for DeVry University, 12th Edition. Pearson Learning Solutions, 11/2012. VitalBook file.

Answer: A) will have the most voltage. B) will have the most impact. C) Problem 9 C)
Problem 9 C)

13. For the circuit in Fig. 5.97, constructed of standard value resistors:
a. Find the total resistance, current, and voltage across each element.
b. Find the power delivered to each resistor.
c. Calculate the total power delivered to all the resistors.
d. Find the power delivered by the source.
e. How does the power delivered by the source compare to that delivered to all the resistors?
f. Which resistor received the most power? Why?
g. What happened to all the power delivered to the resistors?
h. If the resistors are available with wattage ratings of 1/2 W, 1 W, 2 W, and 5 W, what minimum wattage rating can be used for each resistor?
FIG. 5.97 Problem 13.

(Boylestad 179-180)
Boylestad, Robert L. Introductory Circuit Analysis, VitalSource
Open Document