WHAT IS THE DIFFERENCE BETWEEN RESISANTANCE AND IMPEDANCE
IF IMPEDANCE IS MORE THAN RESISTANCE AT SAME VOLTAGE CAN WE
HAVE RELATION DERIEVED BETWEEN THEM
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Answer Posted / saurabh
Resistance is a real part of Impedance. Basically Impedance
has two parts a)Resitance b)Reactance in case of
alternating current but in case of direct current it has
only one part that is resistance.We can understand it by
the following eqution:
Z=R+jX (all quantities in vector form)
Where the real part of impedance is R it means voltage and
current are in phase and the imaginary part is reactance X.
Impedance is also define by the equation Z=V/I (all
quantities in vector form)
Reactance occurs due to inductance or capacitance of a
circuit so it has also two types a)capacitive reactance b)
inductive reactance given by the equation, X=ZsinQ.In case
of Inductive reactance the current is 90 deg. lag with the
voltage and 90 deg lead in case of capacitive reactance in
Idea condition. We can also define impedace by impedance
diagram and find out the relation between resistance
reactance & impedance another equation of impedance is
Z=RcosQ where cosQ is the power factor of the system
| Is This Answer Correct ? | 17 Yes | 1 No |
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