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Watt rating is the amount of real power that is absorbed (or supplied). VA is normally the units given to the total complex power which is made up of the real power and reactive power. The formula for complex power is as follows.
S = P + jQ
P is the real power which is used by the resistive elements of the component while the reactive power (imaginary power) is that power which the capacitive and inductive parts of the circuit cause to flow.
Watt ratings are always lower (or equal) to the VA rating due to the fact that it neglects imaginary power that is flowing, because of this both ratings should be taken into account.
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Potential difference is measured in a unit called 1 a volt 2 a Watt 3 an Ampere 4 an ohm?
The answer is volt.
What is difference between KVA and MVA?
The volt ampere (V.A) is the unit of measurement of apparent power.Apparent power is the vector sum of a circuit's true power and reactive power.A kV.A (not 'KVA') is the symbol for kilovolt ampere, whereas MV.A (not'MVA') is the symbol for megavolt ampere. So the latter is one-thousand times greater than the former!
How source of 6 volt gives 1 ampere current and source of 18 volt gives 0.5 ampere at same resistance is it violation of ohms law?
yes
One volt is equal to?
One volt is the electric potential required to generate one ampere through one ohm. One volt is the electric potential involved when one ampere generates one watt of power. One volt is one joule per coulomb.
How is volt related to ohm and ampere?
1 ohm is the resistance of anything that measures 1 volt between its ends when 1 ampere of current flows through it.
The nec requires that continuous load calculations be increased by an additional percent volt-ampere rating?
25
What is the difference between ampere and volt?
Liken volt and amp to a water in a pipe. Voltage is the water pressure in the pipe and amperage is the water flow through the pipe. They are two completely different electrical units.
The unit to measure current is the volt?
The unit of current is the ampere. The unit of potential difference, or electromagnetic force is the volt.
Potential difference is measured in a unit called 1 a volt 2 a Watt 3 an Ampere 4 an ohm?
The answer is volt.
Can I use 4.5 volt 2 ampere adaptor instead of 5 volt 2 ampere?
yes you can.
How much charging ampere required for 200 apmere lead acid battery for ups 12 volt?
To find our what charging ampere to use a simple way is to divide the battery Ampere with its ampere hour (i.e. for car batteries they will say 75ah C/20) this means that the battery has 75 ampere rating based on 20 hour rating... as such to find the charging ampere divide 75 by 20 to get a charging ampere of 3.75... this is for a slow charge - to speed up the charge divide the ampere by 5 hours (to charge the battery from empty to full in 5 hours)...
What is the current carrying of an 1000kVA transformer?
You cannot answer this question without knowing the rated secondary voltage. Once you know this, divided the voltage into the volt ampere rating.
What is is kva?
kVA is kilo-volt-ampere, which is 1000 x volt x ampere. kVA is the unit of apparent power in AC circuits.
What is difference between KVA and MVA?
The volt ampere (V.A) is the unit of measurement of apparent power.Apparent power is the vector sum of a circuit's true power and reactive power.A kV.A (not 'KVA') is the symbol for kilovolt ampere, whereas MV.A (not'MVA') is the symbol for megavolt ampere. So the latter is one-thousand times greater than the former!
What is the ampere rating for a 12 volt 12 watt battery?
Batteries are generally not listed as having watts. And there are a couple of different ampere ratings. But if you're running something needing 12W of a 12V battery it's pulling 1A out of the battery at the moment.
What is the difference between a volt and an amp?
Liken volt and amp to a water in a pipe. Voltage is the water pressure in the pipe and amperage is the water flow through the pipe. They are two completely different electrical units.
Can a 18.5 volt ac adapter 19 volt laptop?
Yes it is close enough. As long as the power supply ampere hour rating is as high or higher than the laptops requirements. Make sure the polarity of the plug is correct also.
