How much voltage and current is given to homes?
Typically in the US, voltage is +/- 110-120 volts AC RMS (so you can get 240 total), and a typical service will be 100 Amps (I believe, but I could be wrong on "typical" here). This doesn't mean the home uses 100Amps, it means this is the peak amount the home is allowed to draw.
To answer this question a voltage must be given.
Think of Voltage as the pressure and Amperage (current) as flow. If you think of it as pipes with water then the pressure would be voltage, and current would be how much water flows past a certain point in the pipe in a given time.
Any amount of voltage at all if given the right path. Its technically not the voltage that matters, but the current. As little as 20 milliamps across the heart is enough to kill you.
Load current is simply the name given to the current drawn by a load from its supply. In the case of a d.c. circuit, this is determined by dividing the supply voltage by the resistance of the load; in the case of an a.c. circuit, it is determined by dividing the supply voltage by the impedance of the load.
In a DC electrical circuit, there are 3 main components as you said, Voltage, Current and Resistance. The circuit can be thought of as a voltage source (like a battery) and a load (like a light/motor). The load has a given resistance, and the source has a given voltage. If the resistance in the load remains the same, and you increase the voltage at the source, according to Ohms Law, V = IR (voltage =… Read More
"Magnitude" means how strong it is - how much voltage (how many volts), or how much current (how many amperes).
How much current does a flashlight use is it's batteries supply 4.5 volts and it's bulb has a resistance of 9 ohms?
Ohm's Law: Voltage = current x resistance; solving for voltage, current = voltage / resistance. Ohm's Law: Voltage = current x resistance; solving for voltage, current = voltage / resistance. Ohm's Law: Voltage = current x resistance; solving for voltage, current = voltage / resistance. Ohm's Law: Voltage = current x resistance; solving for voltage, current = voltage / resistance.
In long range,electric current can flow only when the wires are given high voltage.The voltage is about 20-30kV.eg.lightning. ---------------------------------------- Current of any voltage can flow in a wire. However, the larger the current is, the larger the resistance to flow and the greater the loss of energy during transmission. Therefore, to transfer the same amount of energy per second (power) without as much loss of energy due to resistance, current needs to be lowered by… Read More
I'm sure I can answer this if given more details, what circuit? current is determined by voltage and impedence(resistance) in a purely resistive circuit it is pretty basic, in alternating voltage circuits the impedence is dependent on the frequency of the voltage/current. inductors and capacitors are designed into a/c circuits to force the load to behave like a resistive circuit which boils down to how much voltage divided by how much resistance you have, 120… Read More
Given a circuit has voltage supply of 12Volts and load resistance of 20ohms how much current is expected?
v=ir 12=i20 i = 0.6 Amp
An LED usually has a resistor connected in series with it because an LED (light emitting diode) is not linear in current to voltage (like a resistor) and has to be operated within specified current and voltage conditions. In most circuits the supply voltage is higher than the forward voltage of the LED so the LED would burn up from too much current without a current limiting resistor in series. The resistor sets the voltage… Read More
The only limit on how much current the conductor can carry, regardless of the weather, is the amount of current that causes the conductor to melt. The current in such a conductor depends on the voltage between its ends, and on the resistance of the conductor. The resistance of the conductor is somewhat less when it's cold, so a given voltage would result in more current.
Everything Depends on the voltage supply ...... Current flow (Amp) = Watt / Voltage the Current flow will be 1 amp if voltage is 1 V the Current flow will be 0.5 amp if voltage is 2 V the Current flow will be 0.25 amp if voltage is 4 V and so on.......
Voltage and amperage are different and independent quantities. Knowing the voltage does not tell you how much current is flowing. It could be any amount.
Leading and lagging currents are not so much "currents" as they are "situations" or "conditions" in an electrical circuit. Reactive characteristics, if there are any, will not let voltage and current be in phase in a circuit. (Unless they are equal, and this will be true at only one frequency.) In some circuits, current leads voltage (or voltage lags current), and in other circuits, current lags voltage (voltage leads current), depending on the circuit and… Read More
Can you put your adapter in your room and use extra cable of 50 meters to power up Switch with DC current?
Probably not because the resistance of the wire is too much. If you know the current and voltage a better answer could be given.
Electrical resistance is opposition to electric current flow. There is a resistance to the flow of current. And a "balance" between applied voltage and resistance determines how much current will flow in a circuit. For a given applied voltage, if we increase the resistance, the current flow will decrease. For that same applied voltage, if we decrease the resistance, the current flow will increase. It's a simple relationship, and it is set down by the… Read More
A 10 ohms resistor is connected aross a 12 volt battery How much current is there through the resistor?
Voltage = Current * Resistance Voltage = 12V Resistance = 10 ohms Current = Voltage/Resistance Current = 12V/10 ohms Current = 1.2 Amps
why the voltage is 230v for house in india
Its not voltage that kills it is current. High voltage CAN kill, if it can also provide high current (especially if the current comes near the heart as it takes under 1mA to stop the heart which isn't much current). However if the high voltage source is current limited and/or the current only passes through the extremities it is very unlikely to kill.
A voltage source provides a voltage, a current source a current. In reality, there is no such thing as an ideal voltage source or an ideal current source. There are usually internal resistances and limits of operation, such as the amount of current a voltage source can provide, or the amount of voltage a current source can provide. Good examples of a voltage source are batteries, generators, and alternators. These all provide a fixed or… Read More
It is nothing but how much current or voltage taken in the circuit. It is known as Magnitude.
The current depends on the supply voltage.
If you know the voltage and resistance, then current = voltage divided by resistance. Otherwise, you can attach an ammeter into the circuit (in series).
Power = (voltage) x (current) Current = (power)/(voltage) = 12/120 = 0.1 Ampere.
Its purpose is to provide approximately the same voltage to a load as what is input to the amplifier, but at a much greater current. In other words, it has no voltage gain, but it does have current gain.
The human body can be electrocuted by as little as 10 milliamps (mA) of current. Remember that voltage is a measure of the pressure driving the current, while amperage measures how much current flows through something (in this case, you). Also keep in mind that 10 mA is 1/100 of an ampere; it doesn't take that much to disrupt a heartbeat. Too much voltage is whatever it takes, between the two points where the circuit… Read More
LEDs don't operate on voltage, they operate on current. connecting them to a voltage source will destroy them.
Ohm's Law defines the relationships between (P) power, (E) voltage, (I) current, and (R) resistance. One ohm is the resistance value through which one volt will maintain a current of one ampere. ( I ) Current flows on a wire or conductor like water flowing down a river from the Negative to the Positive. ( E ) Voltage is the difference in electrical potential between two points in a circuit. ( R ) Resistance determines… Read More
Depends on what you mean by stronger. Ah stands for ampere hour, which is a unit of energy. A battery with 1 Ah can deliver a current of 1 Ampere for 1 hour, or 2 Amperes for 30 minutes, etc. The voltage of a battery tells you how much current the battery will produce through a given resistance; more voltage is probably closer to what you mean by stronger, since knowing the current and the… Read More
Fuses protect by blowing if too much current flows through the fuse and essentially melts the wire. A very high voltage could cause arcing problems. If you keep the same load then increasing the voltage will increase causes an increase in current. The voltage, current and load (Resistance) are related by Ohm's Law Voltage = Current x Resistance
resistance=10ohm, voltage=120v, current=?, I=V/R Amp, =120/10, =12 A. 12 A of current flows in the circuit.
Power = Voltage * Current Current = Power/Voltage, = 2,750,000/110,000 = 25 amps.
How much power can a transmission line carry example how much power can a 69kv line carry compared to a 390kv line what is the formula for power capacity of a hvac line?
For a line of given cross section and material, the power capacity will depend on the current carried, since resistance heating is proportional to (current)2 . For a given power, current is inversely proportional to voltage. Thus raising the voltage from 69 to 390 kv would reduce the current by a factor 69/390 = 0.177 , for the same power transmission, and reduce the heating losses by 0.1772 = 0.031. So you can see why… Read More
If a circuit has a resistance of 4 ohm's how much voltage is needed to produce a 1.4 current in the circuit?
Voltage across a resistance = (resistance) x (current through the resistance) = 4 x 1.4 = 5.6 If the ' 1.4 ' is Amperes of current, then the required voltage is 5.6 volts.
Power in watts = current x voltage Rearranged, current = power/voltage So in this example, current = 12/120 Current = 0.1 amps
The current rating of a 16 kV.A (not 'kva') depends upon the voltage rating of that generator, with 16 kV.A being the product of the rated current and the rated voltage.
It depends by how much it changes. Power (watts) = current (amps) x voltage If the current halves and the voltage doubles, the power won't change. But if the current is cut in half and the voltage only goes up by a little bit the watts will go down. If the current only goes down a little bit but the voltage doubles, then the watts will go up.
Overheating is a result of too much current flowing. AC motors are constant power devices, meaning they require the same amount of power to spin under a specific load. Power is equivalent to voltage times current. If voltage to a motor sags, the motor will attempt to make up the lack of voltage with an increase in current so the power stays the same. If voltage sags too much, the motor will overheat.
If a toy car with a resistance of 2 ohms is connected to a 3v battery how much current flows through the car?
Ohm's Law: V = IR (voltage = current times resistance). Ohm's Law: V = IR (voltage = current times resistance). Ohm's Law: V = IR (voltage = current times resistance). Ohm's Law: V = IR (voltage = current times resistance).
you need more information my way. you use 2 formula v=ir and p=i*i*r. i=current r=resistance v=voltage and p=power (heat given out)
There is no loss in voltage. Voltage is constant (dependant on your supply). The dimming is as a result of of a reduction in current (ampage)
It will depend on the voltage of the electromagnet. If it does not have enough voltage, then it cannot life 3kg.
voltage is equal to resistance multiplyed by current. you have the 2 pieces of info, just multiply
Ohm's Law is that Voltage Drop = Current x Resistance. So Current = Voltage Drop/Resistance. In this case Current = 1.5/1000 amps, or 1.5 milliamps
A: Because a capacitor have to have time to charge to the voltage In a capacitor, the current depends on the voltage difference across it. On AC, this makes it charge, if the voltage is increasing above zero, and discharge if the voltage is reducing towards zero. Because a capacitor has almost no internal resistance, and most loads that it is connected to have only very small resistances in series with the capacitor, the charging… Read More
When you have a Power Factor less than 1 the voltage and current waveforms in an AC circuit are out of phase. Therefore at any given instant of time the work being done or energy being expended is calculated by multiplying the current x voltage. This reduces the wattage at any instant of time. When the Power Factor is one the instantaneous multiplication of the current and voltage would yield the maximum value with the… Read More
voltage drop is zero bcz in open ckt current will be zero
1)Short circuit test is performed at rated current. As the rated current on high voltage side is much less than low voltage side, so the rated high voltage side current is easily achieved compared to low voltage side. 2)Also because we cannot short circuit high voltage side, as, if we short circuit high voltage side, voltage of high voltage side essentially falls to zero and since VI=constant, so the high voltage side current will be… Read More
How much voltage would be necessary to generate 10 amps of current in a circuit that has 5 ohms of resistance?
Just use Ohm's Law: V=IR (voltage = current x resistance).