Why does current saturate in photoelectric effect?

The number of electrons emitted per second is fixed. SO, SATURATION CURRENT IS THAT CURRENT WHEN THE RATE OF FLOW OF CHARGE IN THE CIRCUIT BECOMES EQUAL TO THE RATE OF EMISSION OF ELECTRONS .

What happens to the photocurrent when you increase the potential V will it saturate?

when accelerating potential is increased,the photocurrent increases upto a certain level after which it saturates as all the emitted electrons are collected by the collector plate. but when intensity is increased,the current is directly proportional and does not saturate.

Why does saturation current not change with increase the anode potential?

If you increase the frequency of the photon, you increase the electron’s kinetic energy outside the surface. When the increase you increase the frequency you increase stopping potential but the saturation current remains the same for a given intensity.

Why does current become saturated?

When the voltage is increased up to a certain level, every electron that gets released is able to reach the other electrode, but as the number of electrons getting released is constant, current too becomes constant (saturation current) and no further increase in voltage will cause increase in current.

Why does saturation current mean?

are the carrier lifetimes of holes and electrons, respectively. Since the minority charge carriers in the n-region and p-region are produced by thermally generated electron-hole pairs, these minority charge carriers are extremely temperature dependent and independent of the applied bias voltage. …

Why is photoelectric current proportional to the intensity of incident radiation?

It’s because intensity is directlyproportional to number of photon in light ray and in photoelectric effect one photon can only release one electron and so more intense light means more photon hence more elections will ejected from the metal surface and hence increasing the photo current .

How does saturation current varies with anode potential?

(i) Saturation current is same for incident radiations of different frequencies but of same intensity. It does not change with increase in anode potential.

Why is saturation current the same?

(i) In photoelectric emission from a given metal surface, the saturation current depends on the intensity of the incident radiation but is independent of the frequency of the incident radiation. Therefore, for the radiation of diff. frequency but of same intensity, the value of saturation current will be the same.

What is photoelectric saturation current?

It is the maximum current at that time when all the photoelectrons emitted from emitter reach the collector plate. Suitable potential difference is needed.

What is the effect of saturation current in photoelectric effect?

Saturation current in photoelectric effect. Of photoelectrons that reach the other plate (i.e. the carriers of the current) the no. Of photoelectrons reaching will now be 100 only, and will not increase beacuse of increase in pot. Diff thus current after reaching its saturation value cannot be further increased.

How does potential difference affect the photoelectric current?

Fig shows the variation of photo electric current with the potential difference V between the two plates. When the positive potential of A is increased, the photoelectric current is also increased.

What is meant by saturated potential?

As positive potential increases, current produced through photoelectric effect also increases but after reaching a certain point this current stops increasing even if we increase positive potential. This potential is known as saturated potential .

Why current cannot be increased after reaching its saturation value?

Diff thus current after reaching its saturation value cannot be further increased. Regarding the second point, The current flowing depends on the intensity of light. The electrons flow in the area between the plates in almost same speed as in the wire.