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How could two circuits have the same current but different resistances?
Wiki User
∙ 14y ago
The equation, I=V/R (Current = Voltage/Resistance) determines the current, so if you increase both V and R, you will be able to get the same current (with a bit of adjustment to make it exact)
example:
10 Volts & 2 Ohms resistance = 5 Amps Current
20 Volts & 4 Ohms resistance = 5 Amps Current
Wiki User
∙ 14y ago
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Explain the rheostat and its advantages in electric circuits?
Advantages in electric circuits : Advantages of using the rheostat in electric circuits is optional as you could just use the dial on the power-supply to vary the voltage (p.d.), and therefore the current. The advantage of using the rheostat is that you can control it to give you nice even numbers for the voltage.
A fuse is a device used to keep electrical circuits from overheating?
A fuse is a device used to keep electrical circuits from overheating is not a true statement. A fuse is used to protect the wire of the circuit from an over current being applied to the circuit. This over current could be caused by a couple of scenarios. Two non insulated conductors touching one another and creating a short circuit. Another cause could be an non insulated conductor touching adjacent grounded equipment. Whatever the cause the fuse will isolate the fault instantaneously.
What happens if wire insulation is weak?
Depending on the voltage potential that the wire is carrying, an insulation breakdown could lead to a short circuit. If this condition occurs then the circuits over current protection should trip the circuit off line.
Is it ok to run three 240 on one 50 amp breaker?
If you are asking, can three separate 240 volt circuits be run off of one 50 amp breaker then the answer is no. Not without knowing what the loading of the three circuits are and whether all three circuits could be on at the same time.
What is AD current loss?
AD current loss could refer to a comic, called Eddy Current. It could also refer to AD loss, memory loss caused by Alzheimer's Disease.
What are some types of electric circuits?
Some different types of circuits are:openclosedparallelseriesThere are two types of basic circuits, series and parallel.In series, current stays constant and voltage is divided amongst the resistors.In parallel the voltage stays constant, Every branch of the circuit gets the same voltage from the power supplier, but there is different current in every branch but current doesn't get lost. Current entering a junction(branches) must equal to current out of the junction. Iin =Iout.The third type could be the Series-Parallel Combination, which has some components wired in series and other components in parallel. Solving these circuits requires more complex analysis techniques. See related link.Another AnswerElectrical circuits are generally classified as being: (1) series, (2) parallel, (3) series-parallel, and (4) complex. The term, 'complex' is a category into which any circuit that doesn't fall into the first three categories, is placed.
Effects of connecting poor contact in electrical circuits?
An effect of connecting a poor contact in an electrical circuit could be intermittent current flow.
What do you use fuses in?
Electrical circuits, to limit the maximum current flow. Fuses will "blow", or burn out, and cause an open circuit, to stop the flow of current when it could potentially damage a circuit, system, or device.
Explain the rheostat and its advantages in electric circuits?
Advantages in electric circuits : Advantages of using the rheostat in electric circuits is optional as you could just use the dial on the power-supply to vary the voltage (p.d.), and therefore the current. The advantage of using the rheostat is that you can control it to give you nice even numbers for the voltage.
What are some different types of electrical circuits?
Some different types of circuits are:openclosedparallelseriesThere are two types of basic circuits, series and parallel.In series, current stays constant and voltage is divided amongst the resistors.In parallel the voltage stays constant, Every branch of the circuit gets the same voltage from the power supplier, but there is different current in every branch but current doesn't get lost. Current entering a junction(branches) must equal to current out of the junction. Iin =Iout.The third type could be the Series-Parallel Combination, which has some components wired in series and other components in parallel. Solving these circuits requires more complex analysis techniques. See related link.Another AnswerElectrical circuits are generally classified as being: (1) series, (2) parallel, (3) series-parallel, and (4) complex. The term, 'complex' is a category into which any circuit that doesn't fall into the first three categories, is placed.
Why does the same voltage run through all the branches of a parallel circuit irrelevant of the different resistance appliances on those branches?
The same voltage is present but does not run. It is the current that could be described as "runniing" through the different branches. Just by definition, parallel circuits necessarily have the same voltage. It is architecture of the circuit.
Why are fuses and curcuit breakers used in household circuits?
Fuses and circuit breakers are used to protect the wiring and devices from overload and heating caused by short circuits, short circuits that, if unprotected, could cause major damage and/or fire due to excessive current.
Why does your dashboard lights work but not your headlights?
The headlights could have bad bulbs or a bad fuse; the two sets of lights are on different circuits.
Which effect of current does the fuse wire in electric circuits utilize?
The heating effect is used. Normally the current flows through the fuse without undue heating. But if too much current passes through, the fuse will heat and melt, thus stopping the current which could cause a fire if it was not stopped.
What is meant by leading and lagging pf?
Power Factor is the ratio of true vs apparent power, and comes into play with a reactive (inductive or capacitive) load. A purely resistive load, such as a light bulb or toaster, will have a power factor of 1 because the current is in phase with the voltage. An inductive load, however, such as a motor, will have a power factor less than 1 because the current lags the voltage. You could also have a capacitive load, with a power factor less than 1, but in this case the current leads the voltage.AnswerThe terms, 'leading' and 'lagging' refer to whether a circuit's load current is leading or lagging the supply voltage. Current will 'lead' in resistive-capacitive (R-C) circuits, and 'lag' in resistive-inductive (R-L) circuits. So, a 'leading power factor' indicates a leading current, and applies to R-C circuits, while a 'lagging power factor' indicates a lagging current, and applies to R-L circuits.
How many 50 amp breakers feeding 50 amp outlets can you install from a 125 amp main panel?
Three or four would be normal. The total current should not exceed the rating of the main panel, so depending on how intensively the different circuits are used, more could be installed.
What year is it currently?
The current year is 2013. But in different parts for the world and different counties it can be different for them on their calendars for them they could be a year behind or ahead.
