Why are neutrons considered as ideal particles for nuclear fission reactions ? Calculate the energy released in the following nuclear reaction.
1H2 + 1H2 →2H4 +energy
(mass of 1H2 = 2.014102 u, mass of 2He4 = 4.002604 u).
Total e.m.f. = E + E = 2E
Total resistance = r1+ r2 + R
Current, i = ... (i)
P.D. across 1st cell
V = E-ir1
0 = E - ir1
This implies, ... (ii)
From (i) and (ii), we have
⇒ r1 + r2 + R = 2r1
R = r1 - r2
Hence proved
(i) With proper labelling of the axis, draw the input and output characteristic curves of a npn transistor in common emitter configuration.
(ii) Define current gain for a transistor in common emitter configuration.