WELT 2011) Which one of the following represents forward bias diode? 4V (6) 2V DE +27 ca un cu -27

Which of the following represent forward bias diode ?

E^@Cu^(2+)//Cu is + 0.34V At which one of the following concentrations of Cu^(2+) , reduction potential of copper electrode becomes zero

An ideal p-n junction diode can withstand currents up to 10mA under forward bias. The diode has a potential difference of 0.5V across it which is assumed to be independent of current .What is the maximum voltage of the battery used to forward bias the diode when resistance of 200 Omega is connected in series with it.

Let's find which of the following ratios are equal ratios lets try to find. (v) 1.4 : 0.6 and 6.3 : 2.7