College Physics: A Strategic Approach (3rd Edition)
3rd Edition
ISBN: 9780321879721
Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher: PEARSON
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Textbook Question
Chapter 22, Problem 3CQ
What causes electrons to move through a wire as a current?
Expert Solution & Answer
To determine
To explain: The cause for the movement of electrons through a wire.
Answer to Problem 3CQ
The cause for the movement of electrons through a wire is the potential difference.
Explanation of Solution
The electrons in a wire (conductor) moves from one terminal to the other when it is connected to a battery. The battery provides the potential difference in order to move the electrons from lower potential to the higher potential and subsequently establish the electrical field.
The electrical potential difference points the electrical field from higher potential towards lower potential.
The flow of electrons from lower potential to the higher potential in a conductor causes the flow of current from higher potential to the lower potential.
Conclusion:
Thus, the cause for the movement of electrons through a wire is the potential difference.
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A proton moves at 5.20 × 105 m/s in the horizontal direction. It enters a uniform vertical electric field with a magnitude of 8.40 × 103 N/C. Ignore any gravitational effects.
(a) Find the time interval required for the proton to travel 6.00 cm horizontally.
83.33
☑
Your response differs from the correct answer by more than 10%. Double check your calculations. ns
(b) Find its vertical displacement during the time interval in which it travels 6.00 cm horizontally. (Indicate direction with the sign of your answer.)
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Chapter 22 Solutions
College Physics: A Strategic Approach (3rd Edition)
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