Join TSR now and get all your revision questions answeredSign up now

Physics - what is drift velocity?

    • Thread Starter
    Offline

    2
    ReputationRep:
    Hi,

    Please can you explain to me what drift velocity actually is?
    Offline

    3
    ReputationRep:
    The drift velocity is a type of flow velocity that specifically affects particles like electrons. A flow velocity is a vector field which contains the velocity of each part of the fluid at every point in space and at every point in time, but in drift velocity, it's not a fluid, but the electrons. It basically describes the velocity that an electron would be at at every single point in the wire at every point in time. When there is no current flowing through a wire, the average drift velocity values would be 0, since there is no net movement in electrons. When there is a current, however, the average drift velocity value would be positive and in the direction from the negative terminal to the positive terminal as all the electrons are generally moving around the circuit
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by BobBobson)
    The drift velocity is a type of flow velocity that specifically affects particles like electrons. A flow velocity is a vector field which contains the velocity of each part of the fluid at every point in space and at every point in time, but in drift velocity, it's not a fluid, but the electrons. It basically describes the velocity that an electron would be at at every single point in the wire at every point in time. When there is no current flowing through a wire, the average drift velocity values would be 0, since there is no net movement in electrons. When there is a current, however, the average drift velocity value would be positive and in the direction from the negative terminal to the positive terminal as all the electrons are generally moving around the circuit
    Thank you so much
 
 
 
Poll
Which party will you be voting for in the General Election 2017?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.