
Concept explainers
(a)
What is the potential at point A?
(a)

Answer to Problem 92P
The potential at point A is
Explanation of Solution
Write the equation to find the potential at point A.
Here,
Conclusion
Substitute
Therefore, the potential at point A is
(b)
What is the potential at point B?
(b)

Answer to Problem 92P
The potential at point B is
Explanation of Solution
Write the equation to find the potential at point A.
Here,
Conclusion:
Substitute
Therefore, the potential at point B is
(c)
Through what potential difference does it move if charge is moved from point A to B?
(c)

Answer to Problem 92P
The charge moves through a potential of
Explanation of Solution
Write the equation to find the potential difference between points A and B.
Here,
Conclusion:
Substitute
Since the potential difference is greater than zero, potential increases.
Therefore, the charge moves through a potential of
(d)
What is the change in electric potential energy as it moves from point A to B?
(d)

Answer to Problem 92P
As the charge moves from point A to B, its potential energy change is
Explanation of Solution
Write the equation to find the change in potential energy.
Here,
Conclusion:
Substitute
Therefore, as the charge moves from point A to B, its potential energy change is
(e)
How much work is done by the electric field due to charge
(e)

Answer to Problem 92P
The work done by the electric field due to charge
Explanation of Solution
Work done by electric field is equal to the change in electric potential energy due to the motion of charge from point A to point B.
Here,
Conclusion:
Substitute
Therefore, The work done by the electric field due to charge
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Chapter 17 Solutions
Physics
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