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Calculation of electricity cost Electric energy cost is calculated from the total electric energy used in each month. Kilowatt-hour, also known as "meter or electric meter," each type of electrical appliance uses different electrical energy depending on the type and size of the appliance, according to the numbers indicated on the appliance that indicates the entire length. Voltage difference (V), power (W), including frequency (Hz) of electricity applied to an appliance. Power is the electrical energy that is applied for 1 second in joules per second, or “ Watt ”(W) can be calculated from the relationship between the electrical energy consumed in 1 second as follows, and the power (watts), the electrical energy used (joules), the time (s), or the electrical energy at Use (Joule) Electric power (Watts) x Time used (seconds) Example of electrical power calculation Example: One refrigerator has used 1,500 joules of electricity in 10 seconds. How to make? Power (watts) Electrical energy used (joules), time (s) used instead of electrical power 1,500 = 150 joules per second, 10 or 150 watts.
How much electricity will pass through? Electric kettle uses electric power (P) Electric kettle potential difference (V) = 990 W = 220 V Wit) P = IV 990 = 1x 220 990 220 = 4.5 A Rain The electric current through the electric kettle is 4.5 amperes. Part 2 Household Electricity Planning Planning for the use of various types of household appliances can help control your monthly electricity bills. Home electricity can be done as follows) survey home appliances, electrical power and the amount of time of use that there are 6) Take the survey data to calculate the electricity cost and plan the use of each type of electrical appliances for further savings. Or deteriorate, expire of use, etc., a fraction of an electric kettle uses 990 watts of power when connected to a 220 volt voltage, what kind of electrical appliances are there, how much power and how long is it used? In addition, the planning of electricity usage can also help power consumers to observe if electrical appliances room malfunctions such as the cost of electricity may be greater than the projected value. Examine if there are any types of electrical appliances that are abnormal or not Electric leakage
Good to know: The measurement of electrical energy used in homes is commonly used in larger units than joules, using kilowatt-hours, also known as units (Unit: Unit). Electrical energy 1 kWh refers to the electrical energy consumed 1,000. Watt in 1 hour or Electrical Power (Unit) = Power (kW) x Time (Hour). Example of calculating electricity cost from an appliance. How many units go and how much will it cost if electricity is 2.50 baht per unit? How to make electricity (units) = power (kilowatt) x time (hour) 2,000 power = 2,000 watts - = 2 kilowatts 1,000 time used = 2 hours instead of the cost of electricity = 2 x 2 = 4 units will pay for electricity = 4 x 2.50 = 10 baht, use 4 units of electricity and pay 10 baht for electricity. Answer, the power is more or less depending on With the amount of current and the potential difference, so the power factor can be calculated from the product of the potential difference and the current as follows: power (watts) = current (amperes) x potential difference (volts) or when Set to p is for power in watts (W) instead of electric current in amperes (A) V for potential difference in volts (V) P = IV
