Question

the primary coil of an ideal transformer carries a current of 2.5 A while the secondary coil carries a current of 5.0 A the ratio of number tunrs of wire in the

Answer 1

@radar

Answer 2

the primary coil of an ideal transformer carries a current of 2.5 A while the secondary coil carries a current of 5.0 A the ratio of number tunrs of wire in the primary coil to that in the secondary is:

Answer 3

This is a step-down voltage transformer, the ratio is 2:1 Power in primary and secondary is almost equal except for minor losses.

Answer 4

Since this was an ideal transformer, losses did not come into play

Answer 5

oh yeah that make sense thank you

a metal ring is oriented with the plane of its area perpendicular to a spatially uniform magnetic field that increases at a steady rate after the radius of the ring is doubled while the rate of increase of the field is cut in half, the emf induced in the ring
remains the same
increases by a factor of 4
increases by a factor of 2
decreases by factor of 2

Answer 6

Don't know that one, I have more practical knowledge than theoretical. I would have to research that and find out how the diameter of the loop affect the voltage (emf)

Answer 7

alright np thnx btw

Answer 8

http://www.chegg.com/homework-help/figure-shows-region-uniform-magnetic-field-page-outside-regi-chapter-20-problem-8mcq-solution-9780077437886-exc

Answer 9

can you please check out that question ^

Answer 10

this is the question in pdf file

Answer 11

I have no idea, but regarding the question about the loop. Since the radious has doubled, the area of the loop is now 4 times as much, I would WAG that emf has increased by a factor of 2.

Answer 12

Imma gonna have to go for awhile. Good luck with your studies and that test.