Physics - Current Electricity Question with Solution | TestHub
PhysicsCurrent ElectricityMicroscopicMedium2 minai-gemini
PhysicsMediumsingle choice
A conductor of length and uniform cross-sectional area has a current flowing through it. If the number density of free electrons is and the charge of an electron is , what is the average drift velocity of the electrons?
Options:
Answer:
A
Solution:
The relationship between current and drift velocity in a conductor is given by the formula , where is the number density of free electrons, is the cross-sectional area of the conductor, and is the charge of an electron. Rearranging this formula to solve for the drift velocity, we get . The length of the conductor is not directly involved in determining the drift velocity for a given current, number density, area, and charge.
Stream:JEESubject:PhysicsTopic:Current ElectricitySubtopic:Microscopic
⏱ 2mℹ️ Source: ai-gemini
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