When 'I' is what is 'A'

What happens when : (i) What is basicity of H_3PO_3 and why ? (ii) Why does fluorine not play the role of central atomo in inter halogen compunds ?

In the circuit shown in Fig. if we assume that when the input voltage at the base resistance is 5V, V_(BE) is zero and V_(CE) is also zero. What is I_,I_ and beta? When the input is zero, then I_ is zero. What would be the output wave form if the input wave form is as shown in Fig.

One capacitor with plate area A is being charged up. At a particular instant when charging current is I, what will be displacement current through a planar loop of area (A)/(2) , imagined between the plates and parallel to them ?

What organic product is obtained when ethanol is heated with KOH and I_2