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An electric motor takes 5A from a 220 V line Determine the power of the motor and the energy consumed in 2 hours?
Wiki User
∙ 13y ago
Power is current times voltage, that is, 5 x 220 = 1100 Watts, or 1.1 kW. That's 1.1 kWh/hour, or 2.2 kWh in 2 hours.
Note: The formula power = current x voltage is only valid if current and voltage are in phase. If they are not, power may be somewhat lower. (A "power factor" must be included in the calculations in this case, this power factor may be less than one.)
Wiki User
∙ 13y ago
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How many units of electrical energy is consumed by a 3 kW stove which is switched on for 6 hours?
18kwh
How do you calculate Kwh saving after installing capacitor bank?
Adding a capacitor bank makes absolutely no difference whatsoever to the amount of energy consumed (in kilowatt hours). The capacitor bank might reduce the load current, but this does not affect the amount of energy consumed. Anyone who tries to sell you a 'capacitor bank' in order to save you energy is selling a SCAM!
How do you calculate kwh?
The unit kWh is a unit of energy, which is power multiplied by time. Multiply the power of the equipment (measured in W or kW) by time used (measured in h) and you get the energy in kWh.Examples:A power of 1 kW over a time of one hour is one kWh. A 100 W (0.1 kW) bulb left on for 5 hours uses 0.1 x 5 = 0.5 kWh.If your home uses an average of 500 W (0.5 kW) then it will consume 12 kWh per day (24 h).Also not the correct capitalization. Only the W (watt) is capitalized, the k (kilo = 1000) prefix and the time unit h (hour) are not.Simply, multiply power (kW) from the time (in hours) the equipment has been used..P (kW) x t (h) = Pt (kWh)
How do you calculate current consumption per hour?
You are confusing energy and current. You consume, and pay for, energy -not current.For the purpose of billing its customers, an electricity utility measures energy in units called kilowatt hours. In the UK, a kilowatt hour is also called a 'unit', short for 'Board of Trade unit'. The Board of Trade, which no longer exists, used to be the government organisation responsible for setting energy prices.A unit, or kilowatt hour, of energy is the amount of energy consumed at the rate of one kilowatt over a period of one hour. So, to determine the number of units that an electrical load 'consumes', you simply multiply its power in kilowatts by the time for which it operates, in hours.
Why are electric meters connected in series with the rest of the circuits in the house?
Electric meters are connected in series with the rest of the circuits in the house because, that way, the meter can measure the current used by all of the circuits in the house. The meter integrates and records the current as power in kilowatt-hours.Another AnswerActually, energy meters are not simply 'connected in series' with the rest of the circuits in a house.In simple terms, an analogue energy meters contain twocoils: a current coil and a voltage coil. The current coil is, indeed, connected in series with the rest of the household circuits, but the voltage coil is connected in parallelbetween the line and neutral conductors. This means that the energy meter is monitoring the (in-phase) load current and the supply voltage, and the torque produced by the resulting magnetic fields is proportional to the power of the load.Power is a measure of the rate of energy consumption and, so, to determine the energy consumed by the load, the meter's combined magnetic fields drive a disc which, as it rotates, drives dials that record the amount of energy consumed over a given period (between meter readings). Energy (notpower!) is expressed in kilowatt hours (kWh).
What does an electric company use to determine how many kilowatt hours of energy are used by a household?
An electricity meter
How kilowatt hours affect your electric bill?
The energy accumulated by your electric meter represents the number of kilo-watt-hours (kWh) you consume. We pay for energy on a tiered scale, and the cost per kWh consumed monthly up to -- say 600 kWh -- is typically low and in the range of 8-12 cents per kWh. Energy consumed above 600 will carry a higher price, like 20 cents per kWh. There may even a third tier at say, 30 cents per kWh for energy consumed above 2000 kWh. Depending on where you live, you may expect the kWh you consume to affect your electric bill in a similar manner.
What is one source of energy you consumed in the past 24 hours?
Sleeping resting
Electric energy usage on your electric bill is measured in?
Kilowatt hours.
What is a equation for electric energy?
electrical energy (in kWh) = electric power (in kWh) X time (in hours) E=Pt
How many joules of energy is consumed if the electrical meter shows 400 units of energy?
The electric meter uses kWh (kilowatt x hours) as units; a Joule is a watt x second. Therefore, a kWh has 3.6 million joules. Just multiply by this number.
How many units of electrical energy is consumed by a 3 kW stove which is switched on for 6 hours?
18kwh
A household has 100 watt lamp light for 2 hours260 watt lamp lighted for 4 hours and a electric fan of 50 watt working for 8 hours a day calculate the electric unit consumed each day?
multiply the watts and hours then divide it by 1000
Energy consumed by city of new york?
New York City consumes about 39.4 million kilowatt hours annually.
How how does watt to energy work?
Watt is a unit of power. watt hours is a unit of energy. (Note x watts times y hours is what you pay for on your electric bill.)
Electric heater A has a power rating of 1kw. Electric heater B has a power rating of 800W. which transfers the most energy in 2 hours?
Electric rating of 1Kw
What do you need to know to calculate how much your electric bill will be?
The average KWH is 0.1099 per hour. In order to determine how an electric bill is calculated for a home is to use an online calculator. This will explain how much electricity is used by different things in your home.
