3.5 - DRIFT OF ELECTRONS AND THE ORIGIN OF RESISTIVITY
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
What is drift velocity?
💡 Hint: Think about how movement occurs when there is an electric field.
Define resistivity.
💡 Hint: Relate it to how well a material conducts electricity.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the average drift velocity of electrons in a conductor under an applied electric field?
💡 Hint: Consider how moving electrons interact with an electric field.
True or False: Relaxation time is the time between successive collisions of electrons.
💡 Hint: Think about how frequent collisions affect electron flow.
1 more question available
Challenge Problems
Push your limits with advanced challenges
A copper wire has a diameter of 2 mm and carries a current of 5 A. Calculate the drift velocity of conduction electrons given the density of conduction electrons in copper is approximately 8.5 × 10^28 m^-3.
💡 Hint: Use your knowledge of areas and remember to apply the drift formula correctly.
Given that the resistivity of a material increases as temperature increases, develop a hypothesis on how the study of resistivity can assist in designing efficient electrical equipment.
💡 Hint: Think about how resistivity changes with temperature and why it matters for electrical devices.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.