Question

@michele_laino

Answer 1

i require help

Answer 2

please, what is \(j\)?

Answer 3

is \(j\) such that \(j^2=-1\) ?

Answer 4

yup

Answer 5

if \(j^2=-1\) then we can write:
\(j^5=j^4 \cdot j=1 \cdot j=j\)

Answer 6

since \(j^4= j^2 \cdot j^2= (-1) \cdot (-1)=1\)

Answer 7

so, what is the right option?

Answer 8

you are studying electrical engineering, I guess :)

Answer 9

lol yup

Answer 10

IT enginnering

Answer 11

yes! :)

Answer 12

did you see my answer to your post about a complex circuit?

Answer 13

there, I have used this condition:
\[\huge {\text{rot }}{\mathbf{E}} = {\mathbf{0}}\]

Answer 14

which is valid for static electric fields

Answer 15

wait a sec

Answer 16

is it c

Answer 17

I think that magnetic induction phenomena is decreased, so you are right!

Answer 18

please wait a moment

Answer 19

if the load on the secondary circuit is decreased, then the voltage on such circuit is increased, right?

Answer 20

hmm

Answer 21

More precisely, if the load on secondary circuit is decreased, then the currents inside the primary and secondary circuit increase.

Answer 22

that is a transient phase

Answer 23

nevertheless the power dissipated by the secondary has to be equal to the input power on the primary circuit of the transforemer

Answer 24

transformer*
So we get an decreasing of current, and we get, finally a decreasing of energy loss by hysteresis, eddy current and copper