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Part A) 21 The current falls whenever two transistors are linked in series because the overall resistance rises. However, if you link them in parallel, totalresistanceis reduced, which causes current to increase. Therefore, choice 1 is correct. In a series circuit, the current is continuous.Part B) The right answer is that when tworesistorsare linked in series, less total current flows through the circuit than when they are connected in parallel.What are resistors used for?What a resistor is. a passive electrical device that has two terminals and isemployedin electrical circuits to limit or regulate the flow of current. A resistor's primary function is to lower the voltage and reduce current flow in a specific area of the circuit.Where do resistors get their use?The amount of current flowing through the circuit is affected by any changes in aresistancevalue. The following are some circuit functions where resistors are used: the musical tone's pitch, and.To know more aboutresistorsvisit:brainly.com/question/24297401#SPJ4...