誰人可給我phy tas Phase difference in CR and LR circuit??(贈點: 5)

Question

誰人可給我phy tas Phase difference in CR and LR circuits??
急要....星期二晚deadline ><.......thx~
(一定要有0個d問題的答案,如愈詳細給予愈多分數)

1.what is the phase difference between the p.d. and the current?
2.Change the resistance value.Phase difference有乜影響?

1.what is the phase difference between the p.d. and the current?
2.Change the resistance value.Phase difference有乜影響?

3.Replace the capacitor with a high inductance coil fitted on a double c-core.What is the phase diff. between the p.d. across the inductor and the current through it?Why is it not 90°? (我想要埋個CRO traces)

Answer 1

1) phase difference between the p.d. and the current : π/2 ( theoretical value) /less than π/2 ( exptal value if R is large)
2)If R is larger than before, phrase difference is less than π/2
3) phrase difference is π/2 ( theoretical value) /less than π/2 ( exptal value if R is large)
ess than π/2
this is because current is compared with p.d. across L and R, rather than that across L.

Answer 2

What are your questions?