If a capacitor of capacitance C is connected across the alternating source, the spontaneous charge on the capacitor,
q = CVC= CV0sin wt
and the instantaneous current i going through it, is shown by: 
or i = i0sin (wt + p/2) |
|
Here, V = i/wC
This equation gives that the quantity is the effective ac resistance or the capacitive reactance of the capacitor and is represented as XC. It has unit as ohm. Thus, X =1/wC
It is seems that the current has the voltage by 90° or the potential drop across the capacitor lags the current passing it by 90°. Diagram gives V and i as functions of time t. |
|
Inductor in an AC Circuit:Consider a pure inductor of self inductance L and zero resistance connected to an alternation source. Again we suppose that an instantaneous current i = i0sin wt flows through the inductor. Although there is no stoppage, there is a potential difference VLin between the inductor terminals a and b because the current changes with time, giving rise to self induced emf. |
|
Equation (iii) shows that effective ac resistance, i.e., productive reactance of inductor is,
XL= wL
And the maximum current, i=V/XL
The unit of XLis also ohm.
From Equations. (i) and (iii) we see that the voltage across the inductor leads the current passing through it by 90°.
Diagram defines VLand i as functions of time.
Email based Physics assignment help - homework help at Expertsmind
Are you searching physics expert for help with Alternating current questions? Alternating current topic is not easier to learn without external help? We atwww.52400199.comoffer finest service ofPhysics assignment helpand physics homework help. Live tutors are available for 24x7 hours helping students in their Alternating current related problems. We provide step by step Alternating current question's answers with 100% plagiarism free content. We prepare quality content and notes for Alternating current topic under physics theory and study material. These are avail for subscribed users and they can get advantages anytime.
Why Expertsmind for assignment help
- Higher degree holder and experienced experts network
- 守时和责任的工作
- Quality solution with 100% plagiarism free answers
- Time on Delivery
- 隐私的information and details
- Excellence in solving physics queries in excels and word format.
- Best tutoring assistance 24x7 hours