Question 1 a. Considering the figure below, students often have difficulty formulating a method of solution: determining what steps to take to get from the given conditions to a final answer. Discuss into details what a good procedure might be for calculating each of the unknown values in this problem, and also how you might check your work if the values calculated are correct. 2.7 k2 4.7 kS2 3.9 k2 10 mA R2 R2 Total 10 mA R. 4.7 k2 2.7 k2 3.9 k2 P.

Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter29: Dc Generators
Section: Chapter Questions
Problem 1PA: You are working as an electrician in a large steel manufacturing plant, and you are in the process...
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Question 1
a. Considering the figure below, students often have difficulty formulating a method of
solution: determining what steps to take to get from the given conditions to a final
answer. Discuss into details what a good procedure might be for calculating each of
the unknown values in this problem, and also how you might check your work if the
values calculated are correct.
2.7 k2
4.7 kS2
R,
3.9 k2 SR
10 mA
R,
R,
Total
10 mA
R
4.7 k2
2.7 k2
3.9 kQ
P
b. A piece of pencil lead is connected in series with an ammeter and a power supply.
The power supply is turned on. After a few minutes, although the potential difference
across the pencil lead does not change, the current in the circuit increases
significantly. Explain why the current increases.
c. Electric fields are caused by both point charges and by parallel plates with a potential
difference across them. Describe the difference between the electric field caused by a
point charge and the electric field between parallel plates. Your answer should include
a diagram of each type of field and reference to electric field strength.
Transcribed Image Text:Question 1 a. Considering the figure below, students often have difficulty formulating a method of solution: determining what steps to take to get from the given conditions to a final answer. Discuss into details what a good procedure might be for calculating each of the unknown values in this problem, and also how you might check your work if the values calculated are correct. 2.7 k2 4.7 kS2 R, 3.9 k2 SR 10 mA R, R, Total 10 mA R 4.7 k2 2.7 k2 3.9 kQ P b. A piece of pencil lead is connected in series with an ammeter and a power supply. The power supply is turned on. After a few minutes, although the potential difference across the pencil lead does not change, the current in the circuit increases significantly. Explain why the current increases. c. Electric fields are caused by both point charges and by parallel plates with a potential difference across them. Describe the difference between the electric field caused by a point charge and the electric field between parallel plates. Your answer should include a diagram of each type of field and reference to electric field strength.
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