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(i) Derive an expression for drift veloc...

`(i)` Derive an expression for drift velocity of free electrons.
`(ii)` How many drift velocity of electrons in a metallic conductor vary with increase in temperature ? Explain.

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### Step-by-Step Solution #### (i) Derivation of Expression for Drift Velocity of Free Electrons 1. **Understanding the Concept**: - When a potential difference (V) is applied across a conductor, an electric field (E) is created, causing free electrons to move and generate a current. 2. **Force on Electrons**: ...
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Knowledge Check

  • The drift velocity of electrons is given by

    A
    `v_(d)=(e)/(m)(V)/(l)t`
    B
    `v_(d)=(eV t)/(l)`
    C
    `v_(d)=(e)/(m)t`
    D
    `v_(d)=(V)/(l)(m)/(e)t`

  • The drift velocity of electron in a metal conductor under effective of elecrtic field applied is

    A
    `10^(-1)m//s`
    B
    `10^(-2)m//s`
    C
    `10^(-3)m//s`
    D
    `10^(-4)m//s`

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