Energy of each incident photon = h\\upsilon Total energy incident per second on sphere = IA \ herefore No. of photons incident on sphere per second = \\dfrac{IA}{h\\upsilon} \ herefore No. of photolectrons ejected per second = \\dfrac{IA}{h\\upsilon} Current through the conducting wire = charge flowing per second through wire = \\dfrac{IAe}{h\\upsilon}