Concept explainers
(a)
The magnitude and direction of the net electric force on
(a)
Answer to Problem 12P
The direction of net electric force is along negative
Explanation of Solution
Write the expression for electrostatic force.
Here,
The force acting on three charges is shown in Figure (1).
Figure (1)
Write the expression for electric force due to
Here,
Write the expression for electric force due to
Here,
Write the expression for electric force on
Substitute
Conclusion:
Substitute
Therefore, the direction of net electric force is along negative
(b)
The magnitude and direction of the net electric force on
(b)
Answer to Problem 12P
The direction of net electric force is along positive
Explanation of Solution
Write the expression for electric force due to
Here,
Write the expression for electric force due to
Here,
Write the expression for electric force on
Substitute
Conclusion:
Substitute
Therefore, the direction of net electric force is along positive
(c)
The magnitude and direction of the net electric force on
(c)
Answer to Problem 12P
The direction of net electric force is along negative
Explanation of Solution
Write the expression for electric force due to
Here,
Write the expression for electric force due to
Here,
Write the expression for electric force on
Substitute
Conclusion:
Substitute
Therefore, the direction of net electric force is along negative
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Chapter 23 Solutions
Physics For Scientists And Engineers With Modern Physics, 9th Edition, The Ohio State University
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