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There are three sources of resistance in a parallel circuit Two of them are rated at 20 ohms the other at 10 ohms What is the circuit's total resistance?
Wiki User
∙ 12y ago
-- If the 20 ohms and the nother 10 ohms are configured in series, then the total
net effective resistance is 30 ohms.
-- If they are configured in parallel, then the total effective resistance is 62/3 ohms.
Wiki User
∙ 11y ago
Wiki User
∙ 15y agoIs the circuit in series or parallel? If series then R = R1 + R2 + R3 (where R = Resistance) Or R = 20+20+10 = 50 = 50 Ohms If parallel then I/R = I/R1 + I/R2 + I/R3 (where I = Volts and R = Resistance) Or 5 ohms
Wiki User
∙ 13y ago2 resistors of 20 Ohm in parallel makes 10 Ohm.
Another 10 Ohm in parallel makes 5 Ohm.
Answer is 5 Ohm.
When sending voltage and current through the resistors, the 10 Ohm will receive twice as much current as each 20 Ohm resistor.
If the resistors combined draw 100 mA, then 50mA to the 10 Ohm and 25 mA to each 20 Ohm.
Wiki User
∙ 15y agoThe total resistance is 5 ohms. Scroll down to related links and look at "Parallel Resistance Calculator".
Wiki User
∙ 15y agoIt's not clear which value the third resitance is, but here is a calculator to find the total resistance. Scroll down to related links and look at "Parallel Resistance Calculator".
Wiki User
∙ 14y agothere are three sources of resistance in a parallel circuit two of them are rated at 20 ohms the other at 10 ohms what is the circuit total resistance
Wiki User
∙ 14y ago(1/R) = (1/20) + (1/20) + (1/10) = (2/20) + (1/10) = (2/10) = (1/5)
R = 5 ohms
Wiki User
∙ 12y ago5 ohms
Wiki User
∙ 13y ago133.33
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What are the advantages of series and parallel circuits and series - parallel circuits?
An advantage to parallel circuits is that if one component fails the circuit is not broken, therefore allowing the rest of the components to receive electricity. A good example of this is a string of Christmas lights which are wired in parallel so that if one bulb blows the entire circuit is not broken.
What is infinite resistance in a circuit?
It isn't. If you're using superposition, you open circuit current sources and short voltage sources; this is because the current source declares the current that will be flowing through that branch. Both current and voltage sources have a finite internal resistance.
When adding resistance in a series circuit what happens to supply voltage?
In a series circuit... Kirchoff's current law: The sum of the signed currents entering a node is zero. Since a series circuit consists of only nodes each connected to only two elements, this means that the current in every point in a series circuit is the same. Kirchoff's voltage law: The sum of the signed voltage drops in a series circuit is zero. This means, that if you segregate the sources from the loads, the total voltage across all the nodes is equal to the total voltage across all the sources. That may seem trite, but take the case where you have one battery in series with two resistors also in series. If you know the voltage across one resistor, then you know the voltage across the other resistor - it is the battery voltage minus the first resistor's voltage. Ohm's law: Voltage is current times resistance. This actually applies everywhere; series circuits, parallel circuits, DC circuits, AC circuits, etc.
Why parallel circuit connection is used in common wiring practice?
A parallel circuit is used in common wiring practice because it allows one item to go out and the rest will remain on. Say that you had an office building. If every light bulb in the place was connected in series(every light bulb connected to the next on one current path), if one were to burn out, the circuit would break and all the other bulbs would go out. By using a parallel circuit, one bulb can go out and the rest can stay lit. Another reason that this occurs is because of the resistance involved in a series circuit. By connecting everything in one path, resistance to current will grow rapidly, so and current supplied to the circuit would be wasted by the resistance. Connecting in parallel gives multiple pathways for current to travel between devices and power sources, so the resistance is much lower, and more of the energy goes to powering the device rather than overcoming resistance.
What is common to both thevenin and norton theorem?
To solve any D.C. circuit by using Thevenin Theorem,First of all load resistance RL is disconnected from the circuit and open circuit voltage across the circuit is calculated (known as Thevenin equivalent voltage)Secondly, the battery is removed by leaving behind its internal resistance. Now we calculate equivqlent resistance of the circuit ( called Thevenin equivalent resistance).Now we connect Thevenin Voltage in series with Equivalent resistance of the circuit and now connect load resistance across this circuit to calculate current flowing through the load resistance.Whereas in the case of using Norton theorem, we again remove the load resistance if any, and then short circuit these open terminals and calculate short circuit current Isc.Second step is same as in Thevenin theorem i.e. remove all sources of emf by replacing their internal resistances and calculate equivqalent resistance of the circuit.Lastly, join short circuit current source in parallel with equivalent resistance of the circuit. Now, we can calculate votage across the resistance which was connected in parallel with Isc.So, by knowing the open circuit voltage, we can calculate current flowing the resistance and on the other hand , by knowing the short curcuit current , we can calculate voltage across the resistance.
There are three sources of resistance in a parallel circuit. two of them are rated at 20 ohms the other at 10 ohms. what is the circuits total resistance?
5 ohms
There are three sources of resistence in a parallel circuit two of them are rated at 20 ohms the other 10 ohms what is the circuits total resistance?
The total resistance is 5 ohms. Scroll down to related links and look at "Parallel Resistance Calculator".
There are three sources of resistance in a parallel circuit two of them are rated at 20 ohms the other at 10 ohms what is the circuit's total resistances?
5 ohms.
Disvantages of parallel circuits?
It will be circuits in which there are different ways running close by each other. Much of the time this will be because of either various force sources streaming to a solitary yield, or one force source racing to different yields. By part the circuit along a few lines thusly, parallel circuits can accomplish things arrangement circuits can't, yet they likewise accompany a few detriments.
What are the advantages of series and parallel circuits and series - parallel circuits?
An advantage to parallel circuits is that if one component fails the circuit is not broken, therefore allowing the rest of the components to receive electricity. A good example of this is a string of Christmas lights which are wired in parallel so that if one bulb blows the entire circuit is not broken.
Why do you replace voltage sources with short circuits and current sources with open circuits in thevenin's theorem?
The equivalent of an inactive Thevenin voltage source is a source with zero voltage between its terminals regardless of the current through it, best represented by a zero resistance, i.e. a short-circuit. The equivalent of an inactive Norton current source is a source through which no current can flow regardless of the voltage across it, best represented by an infinite resistance, i.e. an open circuit.
What will happen if two dc sources are connected in parallel?
IF two dc sources are connected in parallel, the one with the highest potential dominates the circuit.
What is infinite resistance in a circuit?
It isn't. If you're using superposition, you open circuit current sources and short voltage sources; this is because the current source declares the current that will be flowing through that branch. Both current and voltage sources have a finite internal resistance.
Why parallel circuit connection is used in common wiring practice?
A parallel circuit is used in common wiring practice because it allows one item to go out and the rest will remain on. Say that you had an office building. If every light bulb in the place was connected in series(every light bulb connected to the next on one current path), if one were to burn out, the circuit would break and all the other bulbs would go out. By using a parallel circuit, one bulb can go out and the rest can stay lit. Another reason that this occurs is because of the resistance involved in a series circuit. By connecting everything in one path, resistance to current will grow rapidly, so and current supplied to the circuit would be wasted by the resistance. Connecting in parallel gives multiple pathways for current to travel between devices and power sources, so the resistance is much lower, and more of the energy goes to powering the device rather than overcoming resistance.
When adding resistance in a series circuit what happens to supply voltage?
In a series circuit... Kirchoff's current law: The sum of the signed currents entering a node is zero. Since a series circuit consists of only nodes each connected to only two elements, this means that the current in every point in a series circuit is the same. Kirchoff's voltage law: The sum of the signed voltage drops in a series circuit is zero. This means, that if you segregate the sources from the loads, the total voltage across all the nodes is equal to the total voltage across all the sources. That may seem trite, but take the case where you have one battery in series with two resistors also in series. If you know the voltage across one resistor, then you know the voltage across the other resistor - it is the battery voltage minus the first resistor's voltage. Ohm's law: Voltage is current times resistance. This actually applies everywhere; series circuits, parallel circuits, DC circuits, AC circuits, etc.
What is voltage drop in parallel circuit?
First calculate your resistance for your parallel circuit using the reciprocal formula1/1/r1+1/r2 etc... Get that total and then add it to your resistance total of your series circuits. Divideyour applied voltage EA by Resistance Total RTthis gives you your current total or IT. Calculate your voltage drops by multiplying IT by your resistors in the series circuit. Subtract those voltage drops from your applied voltage EA and you now have your voltage drops for your parallel circuit, which all are equal to each other.
What is common to both thevenin and norton theorem?
To solve any D.C. circuit by using Thevenin Theorem,First of all load resistance RL is disconnected from the circuit and open circuit voltage across the circuit is calculated (known as Thevenin equivalent voltage)Secondly, the battery is removed by leaving behind its internal resistance. Now we calculate equivqlent resistance of the circuit ( called Thevenin equivalent resistance).Now we connect Thevenin Voltage in series with Equivalent resistance of the circuit and now connect load resistance across this circuit to calculate current flowing through the load resistance.Whereas in the case of using Norton theorem, we again remove the load resistance if any, and then short circuit these open terminals and calculate short circuit current Isc.Second step is same as in Thevenin theorem i.e. remove all sources of emf by replacing their internal resistances and calculate equivqalent resistance of the circuit.Lastly, join short circuit current source in parallel with equivalent resistance of the circuit. Now, we can calculate votage across the resistance which was connected in parallel with Isc.So, by knowing the open circuit voltage, we can calculate current flowing the resistance and on the other hand , by knowing the short curcuit current , we can calculate voltage across the resistance.
