dc circuits


Ask a Question, Get an Answer!
Hundreds of tutors are online and ready to help you right now!
AC Circuit with Pure Capacitance only
capacitance block of DC Therefore the non-resistive of a coil to a.c. due to the varying magnetic field is called capacitive reactance Xc. Unit of Xc is also Ohm The current leads the EMF by 90 o and the phasor diagram is: For DC, Xc becomes infinite and hence, capacitance block DC flowing through i..
Direct Current and Alternating Current
If the current flows always in the same direction, it is called 'direct current'. Direction current is represented as DC or dc. The current derived from a cell or a battery is direct current - since it is unidirectional. The positive and negative terminals are fixed. If th..
Direct Current and Alternating Current
ac dc sources Direct Current and Alternating Current - If the current flows always in the same direction, it is called 'direct current'. Direction current is represented as DC or dc. The current derived from a cell or a battery is direct current - since it is unidirectional. The positive and ..

Direct Current
  • representation of electric circuit When the current flows in the same direction it is called 'direct current' or DC The current derived from a cell or battery is unidirectional. So it is a DC source It is represented in an electrical circuit as The voltage V/s time graph for a DC sou..
Summary
 effective value or virtual value of a.c. .c. It is represented by I r m s , I e f f or I v . It can be shown that All a.c. instruments measure virtual values of a.c. The behavior of an ohmic resistance R in a.c. circuit is the same as in d.c. circuit. Through alternating EMF and alternating current are in sam..
Main Parts of the AC Generator
image >As the armature rotates about an axis perpendicular to the magnetic field, it keeps on changing its relative orientation with respect to the field Thus the flux keeps on changing continuously with time This change in magnetic flux induces an emf If the outer terminals of the armature are connected..
Result Pages   :     1     2


See what our Users say :
Tutor is the BEST. I have learned a lot from her. I never thought algebra will become my favourate subject. All because of Tutor Vista.
Tutor helped me on every question and help me when i was confused. Thank you Tutor Vista
This Tutor Vista is GREAT! loved this session, it helped me heaps.
Tutor Vista tutors are pleasant and great to work with, they were very patient and explained everything that is simple to follow. I love working with them. - John Coakley

Looking for More Help!



Popular Help Topics
Math Help     Math Homework Help     Math Word Problems      Chemistry Homework Help    Trigonometry Formulas     Precalculus Help
Algebra 1     Solving Square Root     Algebra Word Problems   Science Homework Help       Simplifying Fractions        Trigonometry Help
Pre Algebra  Math Answers               Math Problems                 Algebra Homework Help       Math Questions                 Homework Help
Algebra Help  Calculus Help              Statistics Help                  Chemistry Help                     Algebra 2 Help