A 220V light bulb takes 0.45A current and operates 12H in a day. At the rate of Php 4.50 per kWh, determine the cost to operate the bulb for 30 days. [1]
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- Convert 3000 W into the equivalent Btu/hour. Show all the steps.Assume you have one room it has 6 lamps and they are working 12 hours per day. If the unit price is 0.05 OMR, If the Energy bill for 20 days is OMR 7.94 fınd the wattage of each lamp.3) An incandescent lamp has an internal resistance of 96 and operates at 120 V. a) How much current will run through this lamp? b) How much power does this lamp draw? c) If this lamp operates for 180 minutes per day, every day of the year, how much energy (in kWh) does it use in a year? d) If electricity rates are 8 cents per kWh, how much does it cost annually to operate this lamp?
- * 811 1:00 docs.google.com/forms 4 i) Figure below show an electronic device, it is O A DC voltage source A variable resistor. A switch. An Integrated circuit (1.C). ii) The resistor shown has a resistance measured in Ohms, it is equal to with a percentage of error is Second First Digit Multiplier Digit Tolerance 25, 5% 200, 10 %. 200, 5% O 25, 10%. iii) The circuit shown has an; .Ammeter, voltmeter, two resistances and variable resistor components. Describe the connection of each component (series or parallel). 0.15 A ... O O OQuestion: A battery is charged from a constant dc source of 220 V through a chopper. The dc battery is to be charged from its internal emf of 90 V to 122 v. The battery has an internal resistance of 1 ohm for a constant charging current of 10 A. What is the range of duty сycle? Option 1: 0.55 to 0.7 Option 2: 0.2 to 0.4 Option 3: 0.45 to 0.6 Option 4: 0.3 to 0.5A 700 MW power plant consumes coal containing 1.23x 10^14 Joules of thermal energy every day. What is the efficiency of the power plant? O a. 35 % O b. 49 % O c. 56 % O d. 63 %
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