Photoelectric Effect IV Curves

[Knightycloud]

Homework Statement

In photoelectric effect, why the saturated current starts at the y-axis (0,y)? and what is the reason for that gradient at the negative x-axis (Shown as a red line)?

Homework Equations

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The Attempt at a Solution

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[epenguin]

This part was missing

The Attempt at a Solution

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[Knightycloud]

2. Homework Equations
hf = 1/2 mv^2 + e(Vs)

3. The Attempt at a Solution
Because the rate of emitting electrons is increasing from zero to that value.

Am I right?

 

[epenguin]

2. Homework Equations
hf = 1/2 mv^2 + e(Vs)

3. The Attempt at a Solution
Because the rate of emitting electrons is increasing from zero to that value.

Am I right?

Well, it's more the rate of collecting electrons I'd say, but that's only a description of what's observed and what the graph says, not an explanation of why it's like that.