1. Unregistered

# What is the difference between Resistance,Reactance,Y-Bus? What are the Y-Bus Elements?

what is difference between reistance, reactance, Y-Bus?
what is Y-Bus elements?

2. rocking_indian
Join Date
May 2011
Location
bhubaneswar
Posts
194

## Re: What is the difference between Resistance,Reactance,Y-Bus? What are the Y-Bus Elements?

resistance : it is the obstacles that are present in the path of flow of current
conductors have less resistance whlie insulators have very large resistance.
reactance : it is a kind of resistance offered by passive components like inductor or capacitor

3. uday kiran
Join Date
May 2011
Posts
130

## Re: What is the difference between Resistance,Reactance,Y-Bus? What are the Y-Bus Elements?

Electrical resistance (R) is a measure of the resistance that a material or electric circuit presents to the flow of current, and is defined as the ratio of the voltage (V) applied to the electric current (I) which flows through it. The unit of resistance is the ohm. If the resistance is constant over a wide range of voltage, then Ohm's law (I = V/R) can be used to predict the behavior of any material through which a current flows.

Reactance is the opposition of a circuit element to a change of electric current or voltage, due to element's capacitance or inductance. A built-up electric field resists the change of voltage on the element, while a magnetic field resists the change of current. Notion of reactance is similar to electrical resistance, but it differs from it in several aspects.

Capacitance and inductance are inherent properties of an element, just like resistance, but their reactive effects are not exhibited under constant direct current, but only when the conditions in the circuit change. Thus, the reactance differs with the rate of change, and is a constant only for circuits under alternating current of constant frequency. In vector analysis of electric circuits, resistance is the real part of complex impedance, while reactance is the imaginary part. Both share the same SI unit, the ohm.

An ideal resistor has zero reactance, while ideal inductors and capacitors consist entirely of reactance.

4. arun_f67
Join Date
Jun 2011
Posts
117

## Re: What is the difference between Resistance,Reactance,Y-Bus? What are the Y-Bus Elements?

resistance is the property to resist it is a physical term used in current electricity it is aproperty by which current cant flow. reactance is a sort of resistance but mainly used in materials like inductor,capacitor.

5. lovelok_07
Join Date
Jun 2011
Location
Mumbai
Posts
491

## Re: What is the difference between Resistance,Reactance,Y-Bus? What are the Y-Bus Elements?

Resitance is a property of any type of material which appose the flow of current and reactane is the type of resistence in the a c ckt it is two type inductive and capecitive

6. Unregistered

## Re: What is the difference between Resistance,Reactance,Y-Bus? What are the Y-Bus Elements?

Distinguish between reactance, resisrance and impedance.

7. rajraj.2010
Join Date
Jul 2011
Location
delhi
Posts
458

## Re: What is the difference between Resistance,Reactance,Y-Bus? What are the Y-Bus Elements?

listen friend
the main difference between resistance and reluctance that
resistance is is inversely proportional of current so resistance always resist or oppose the current and it is the product form of voltage

reluctance is nothing it just combination of
1.-capacitor and=1/c of current
3.-inductance=LDi/Dt
capacitor or condenser is work as short circuit and inductance is work as storing change and capacitor is pre stored charges
so it is called capacitor
have you understood
study well for good marks and good knowledge

8. Unregistered

## Re: What is the difference between Resistance,Reactance,Y-Bus? What are the Y-Bus Elements?

V-I characteristics of a resistor deviate from the straight line graph for higher values of current. Why?

9. Unregistered

## Re: What is the difference between Resistance,Reactance,Y-Bus? What are the Y-Bus Elements?

it is because for non ohmic devices the current flowing offers heating due to joules law of heating by which the resistance value varies with temperature...