PH2530: Module 4 Electromagnetism Exercise 4.1 Electromagnetism
Solve the following problems:
Two identical charges, each -8.00 x 10-5 C, are separated by a distance of 25.0 cm. Find the electric force between them?
What is the electric force exerted on a test charge of 3.86 x 10-5 C if it is placed in an electric field of magnitude 1.75 x 104 N/C?
Find the resistance of 134 m of No. 20 copper wire at 20° C (ρ = 1.72 x 10-6 Ω cm,
A = 2.07 x 10-2 cm2).
What is the cost to operate a 100 W lamp continuously for one week when the power utility rate is 20 cents/kWh?
A 1000 W microwave, a 40.0 W fluorescent light bulb, and a 550 W computer are plugged into a 120V parallel circuit.
What is the current passing through each appliance in the parallel circuit?
Find the resistance of each appliance.
A magnetic field can deflect a beam of electrons, but it cannot work on the electrons to change their speed. Why?
Find the magnetic field at 0.500 m from a long wire carrying a current of 7.5 A.
An auto mechanic wants to use a solenoid she found on a car starter. If the solenoid is 0.150m in
length and has 750 turns of wire, what amount of current is required to produce a magnetic field of
1.50 x 10-3 T at its centre?
Write a paragraph to describe how a generator functions to generate power. Use common
electromagnetic physics terms, such as induction, coil, and current.
Write a paragraph to describe the differences and similarities between a motor and a generator.
Submission Requirements:
Submit your answers in a Microsoft Word document.
Evaluation Criteria:
The Exercise assignment rubric will be used to evaluate this assignment. In addition, your submission will be evaluated against the following points:
ï‚· Did you show all your work to solve the problem? ï‚· Did you answer the question correctly?
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ï‚· ï‚·
PH2530: Module 4 Electromagnetism Exercise 4.1 Electromagnetism
Did you attempt all the questions?
Did you attach your Microsoft Word document with your work and answers before submitting?
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Subject | Science |
Due By (Pacific Time) | 05/31/2015 10:00 pm |
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