What do you call a group of interacting parts that move or work together? a.)
device
b.)
system
c.)
gadget

B. system

Explanation:

A system is a group of interrelated interacting, or interdependent parts that for a complex whole. A system is a group of interrelated interacting, or interdependent parts that for a complex whole. Most of us hear and use the term frequently

answer: a chemical reaction

explanation:

im not wrong

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current