2.2 - Current in Conductors
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Practice Questions
Test your understanding with targeted questions
Define drift velocity.
💡 Hint: Think about how electrons move in response to an electric field.
What is the unit of electric current?
💡 Hint: Recall the SI unit for measuring electric current.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the drift velocity?
💡 Hint: Think about how potential difference influences electron movement.
True or False: Current can flow through a conductor without an applied potential difference.
💡 Hint: Consider what initiates the flow of current.
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Challenge Problems
Push your limits with advanced challenges
A copper rod with a cross-sectional area of 1 mm² has 8.5 x 10²² free electrons per cubic meter. If these electrons drift with a velocity of 0.02 m/s, what is the current flowing through this rod?
💡 Hint: Make sure to use the correct unit conversions.
If the drift velocity of electrons in a conductor is doubled while keeping the cross-sectional area and number of free electrons constant, how does the current change?
💡 Hint: Recall how changes in drift velocity directly influence the current equation.
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