If an appliance uses 350 watts of electricity, how long does it take for it to consume that power?
Answer:
Watt is unit of power. It is instantaneous energy that an appliance would draw. For calculating energy consumed (some time called as power consumed as misnomer) one has to multiply power with time for which appliance is connected or draws power. Therefore if a 350 W appliance is connected for one hour it will consume 350 Watt Hour or 0.35 kilo watt hour or kWh or units of energy because one kilowatthour is popularly called one unit. Rates for billing are generally based on units of energy consumed.
If appliance is connected for 6 minutes or 1/10 hour it would draw 35 Wh or 0.035 kWh and if connected for 0 (zero) hour it would not consume any energy.
You require the information on how fast the power is being consumed.
x=watts hour
350/x=time.
Power is the rate of energy consumption. A watt is equal to one joule per second. A joule is the amount of energy necessary to change the velocity of one kilogram of mass by one meter per second.
When you ask how long it takes for it to use 350 watts, it's like asking how long it takes for a car to go 60 miles per hour (given that the car is already going that fast). It takes no time; it's happening constantly.
once u connect it and run it, ur load is 350 watts.
what the utility will charge u for is for the watts u connected on a time interval basis.
so if u connect ( & run it for 1 hour) you energy meter will record a consumption of 350 watts for 1 hour or 350 watt.hr.
the standard charges are for Kilowatt.hr.
1 watt = 1 joule / second
that means its using 350 joules per second when its running at its full load!
Usually all equipments use their full load except when u have got arrangement to vary the load like speed of a mixer or a fan or Iron box temp control knobs. It depends, if u use it at fulll load u use total energy
One more thing if use 350 Watts per hour then u are using 0.35KWH that 0.35 units n the company that supplies you power will bill u accordingly!
Ha ha enjoy the bill!!
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