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How much electrical energy is used by an appliance that draws 13 A of current at a voltage difference of 200 V for 1h?
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What wire carries the electrical current to the appliance?
The black wire is the hot wire through which the electrical current flows to the appliance. The left over voltage which is usually zero flows back to the main circuit panel through the white neutral wire where it flows to ground.
If an adaptor is marked with output 12v dc and 2000mA does this mean the appliance draws 2amps when in use?
Yes and No. You have three types of adaptors: constant current with variable voltage output. constant voltage with variable current output. constant voltage with constant current output. What you are talking about is the latter. This means that the adaptor was created for a specific appliance requiring 12V/2A, which it will indeed use. Heavier appliance will not draw enough current/voltage and will malfunction. Lighter appliance will draw too much current/voltage and will overload/shortcircuit.
What is the difference between volts and current?
Electrical current is the number of elementary charge units (coulombs) that pass by a given point in one second. Current, measured in amperes, is coulombs per second. Electrical voltage is the "pressure" behind that current. Voltage, measured in volts, is joules per coulomb.
What do you call the measure of electrical pressure?
Electrical pressure is the difference in electrical potential between two points with or without current flow. Without current flow it known as an EMF (electro motive force E) with current flow it is described as a potential difference (pd V). Both are measured in volts (symbol V).
Why would lights glow brighter or dimmer when running a large appliance?
the lights would grow dimmer if the large appliance draws so much current that the resistance of the main electrical service conductors to that current causes a service voltage drop. less voltage means less light. one reason the lights might grow brighter when the large appliance comes on is if the rest of the household electric load (other than the large appliance)is mostly connected to just one of the service conductors, with the large appliance on the other service conductor and the service neutral is marginal or undersized. the neutral carries the unbalanced current of the two service conductors so, without the large appliance on line, the neutral is carrying a large current and the resistance of the undersized neutral to that large current is causing a voltage drop all the time, so lights are dim all the time. when the large appliance comes on line, the unbalance is reduced, the neutral carries less current, the voltage drop reduces and the lights brighten.
Will the power consumed by an electrical appliance increase with a reduction of applied voltage?
Power consumed by an electrical appliance will increase with a reduction of applied voltage.
What wire carries the electrical current to the appliance?
The black wire is the hot wire through which the electrical current flows to the appliance. The left over voltage which is usually zero flows back to the main circuit panel through the white neutral wire where it flows to ground.
When computing wattage when to include power factor and square root of three?
In its simplest form the equation to calculate the wattage of an electrical appliance is: Watts = voltage x current. If the appliance is in a AC supply use the Route mean square voltage (the stated AC voltage).
How is electrical resistance calculated?
Resistance (Ohms) = Potential Difference (Voltage) / Current (Amps)
How can you calculate the current an appliance can use?
current=watts(power)/voltage
Why do you have voltage on open circuit?
Voltage is simply electrical potential. You do not have to have current to have voltage, but you have to have both voltage and current in order to have power transfer.Voltage = joules per coulombCurrent = coulombs per secondWatts = Voltage times current = joules per secondAnswer'Voltage' is a synonym for 'potential difference', not potential. A potential difference exists between two points which are at different potentials due to an imbalance of their electrical charges.
What device uses the voltage in an electrical current?
A voltage, or potential difference, is what causes current to flow through a circuit. So all devices (called 'loads') require a voltage applied to them.
What neutral means in electrical?
Neutral is the return of the voltage not used by the appliance
What is the difference between an electrical surge and a brownout?
A surge is an over voltage and over current situation and a brownout is an under voltage situation.
How is different between voltage and current?
voltage = the electrical "pressure"current = the electrical "movement rate" or "flow rate"
If an adaptor is marked with output 12v dc and 2000mA does this mean the appliance draws 2amps when in use?
Yes and No. You have three types of adaptors: constant current with variable voltage output. constant voltage with variable current output. constant voltage with constant current output. What you are talking about is the latter. This means that the adaptor was created for a specific appliance requiring 12V/2A, which it will indeed use. Heavier appliance will not draw enough current/voltage and will malfunction. Lighter appliance will draw too much current/voltage and will overload/shortcircuit.
What is the power of an electrical appliance?
It depends on the appliance. All appliances are required to have a 'nameplate' which contains information on their power and voltage ratings.
