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In a transistor the current amplification alpha is '0.9', when connected in common base configuration. Now if the same transistor is connected in common emitter configurations and the change in ouput current is 4.5 mA, then the corresponding charnge in the input current is

Statement-1 : A transistor with common emitter mode has current gain 50 . When base current is 5 muA , the emitter current is 0.255 mA . Statement-2 : I_(e)=I_(b)+I_(c) and beta=I_c//I_b

A small stretch of DNA strand that codes for a polypeptide is shown below: 3' -- ----- CAT CAT AGA TGA AAC --- --- -- 5' (a) Which type of mutation could have occurred in each type resulting in the following mistake during replication of the above original sequence ? i. 3' ..... ... ... CAT CAT AGA TGA ATC... .... .. 5' ii. 3' ... ... ...CAT ATA GAT GAA AC..... .... ..5' (b) How many amino acids will be translated from each of the above strands (i) and (ii) ?

A transistor is operated in common emitter configuration at V_(c)=2 V such that a change in the base current from 100 muA to 200 muA produces a change in the collector current from 5 mA to 10 mA . The current gain is

A transistor is operated in common emitter configuration at V_C=2 V . Such that a change in the base current from 100 muA to 200 muA produces a change in the collector current of 5mA to 10 mA. The current gain is