1. The problem statement, all variables and given/known data In an photoelectric effect experiment , a photoelectric current of 100µA is obtained when lights of 550nm is incident on metal cathode of surface area 1.0cm^2 .... calculate the intensity of the incident light. The ans is 2.26w/m^2 2. Relevant equations 3. The attempt at a solution intensity= power /area intensity= (voltage x current) /area intensity= ( (hc/λ) x I ) / area = (6.63x10^-34)(3x10^8)(100x10^-6) / (550x10^-9)(1.0x10^-4) = 3.61x10^-19 (W/m^2 ) why am i wrong?