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how does the photo electric effect relate to determining the charge of an electron?

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- Thread starter Kristine
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- #1

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how does the photo electric effect relate to determining the charge of an electron?

- #2

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The photoelectric effect is where incident photons have sufficient energy to knock electrons out of their captured state - ie ionise the material. Charge is irrelevant here.

- #3

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If we apply formula for Photoelectric effect i.e.

[tex]k_{max}=E_{photon}-\phi(work function of metal)[/tex]

now if we are able to stop the fastest moving electron with cuttoff voltage such that [tex]eV_0 = K_{max}[/tex]

so we can calculate e from above equation

But i'm not sure whether this is applied for charge calculation

[tex]k_{max}=E_{photon}-\phi(work function of metal)[/tex]

now if we are able to stop the fastest moving electron with cuttoff voltage such that [tex]eV_0 = K_{max}[/tex]

so we can calculate e from above equation

But i'm not sure whether this is applied for charge calculation

Last edited:

- #4

Njorl

Science Advisor

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Njorl

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But i read somewhere that he manipulated with his readings , is there any controversy

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