Aforward biased gap dio de is connected in series with a 1 k2 resister. the e. m.f in the circuit is 10 v. assuming that the built-in voltage of the gap diode is 2 v, 2 marl (i) calculate the current flowing in the circuit. (ii) determine the band-gap energy of gap given that the diode emits light at 562 nm. 000m 2 mar 7(iii) calculate the optical power emitted by the diode assuming 20 % recombination 3 ma efficiency and current flow due to electrons.