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2 cards from this section. Quick, good the night before a test.
What is drift velocity?
Think about how movement occurs when there is an electric field.
Define resistivity.
Relate it to how well a material conducts electricity.
What is the average drift velocity of electrons in a conductor under an applied electric field?
Consider how moving electrons interact with an electric field.
True or False: Relaxation time is the time between successive collisions of electrons.
Think about how frequent collisions affect electron flow.
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.
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.
Think about how resistivity changes with temperature and why it matters for electrical devices.
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