Which is true of a step-down transformer but not a step-up transformer?
a. the core is made o...
Which is true of a step-down transformer but not a step-up transformer?
a. the core is made of copper and the coils are made of copper
b. the core is made of iron and the coils are made of copper
c. the primary winding has fewer coils than the secondary winding
d. the primary winding has more coils than the secondary winding
Answers: 3
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Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.
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