For long-distance transmission of power, in order to reduce losses in the wires by driving a low current at high voltage, we should

a) use a step-up transformer

b) change the length of the wires between transmission towers

c) not use a transformer at all

d) change the type of conducting material

e) use a step down transformer

For long-distance transmission of power, in order to reduce losses in the wires by driving a low current at high voltage, we should use a step-up transformer (a) .

(That's at the beginning, to step-up the voltage for long-distance transmission.  And then use a step-down transformer at the end, to reduce the voltage just before we pour it into the customer's house.)

t2 equal the displacement of the particle over the same time period if t2> t/2? hint: consider a sine wave starting at t1=0, then consider a closing wave starting at t1=0, for your explanatio

small = small current large mag large current