The CE amplifier circuit are preferred over CB amplifier circuit because they have
a.lower amplification factor.
b.larger amplification factor.
c.high input resistance and low output resistance.
d.none of these.
An X - ray tube produces a continuous spectrum of radiation with its shortest wavelength of 45 x 10^-2 A . The maximum energy of a photon in the radiation in eV is ( h = 6.62 x 10^-34J - s,c = 3 x 10^8m/s )
a.27500
b.22500
c.17500
d.12500
For testing appliances, the wattage of test lamp should be high, as higher watt lamps have lower resistance and will not blow up the testing appliacnces.