A student studied how a few parameters of the electromagnetic radiation affects the I-V(current-voltage) curve of photoelectricity. By increasing one parameter he saw that the saturation current has risen. Which parameter it was?

The saturation in the I-V curve is reached when the maximum number of photo-electrons generated by the light reach the electrode and we know that photocurrent is described by I=N*e/t, where N is the number of photo-electrons. Thus we see that to increase the photocurrent we need to increase the number of electrons. To do that we increase the intensity of the light because the more photons there are the more electrons will be released due to the photo effect. 

Answered by Lukas S. Physics tutor

1419 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

A student heats a bar of chocolate in the microwave for one minute. When they remove the bar they observe that there are patches of melted chocolate with unmelted chocolate between them. Suggest the mechanism of how this happens.


What is Kirchoff's first law?


What is the difference between a scalar and a vector? Give 3 examples of each.


How do I approach this question? Our teacher never explained it in class!


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences