### Electrical Energy Cost CalculationIn a particular area of the country, electrical energy costs $0.18 per kilowatt-hour. (Round your answers, in dollars, to at least two decimal places.)#### (a) Incandescent Light BulbHow much does it cost to operate an old-style incandescent 60.0-W light bulb continuously for 24 hours?$ [____]#### (b) LED Light BulbA modern LED light bulb that emits as much visible light as a 60.0-W incandescent only draws 8.50 W of power. How much does it cost to operate this bulb for 24 hours?$ [____]#### (c) Electric OvenA particular electric oven requires a potential difference of 220 V and draws 20.0 A of current when operating. How much does it cost to operate the oven for 3.90 hours?$ [____]**Explanation for Educational Context:**##### Understanding the Problem:- **Electricity Cost Rate**: The cost of electricity is given as $0.18 per kilowatt-hour (kWh).- **Conversion Factor**: Since appliances’ power ratings are given in watts (W), it’s useful to remember that 1 kilowatt (kW) is equal to 1000 watts (W).##### Steps for Calculation:1. **Convert Power to kilowatts**: - Power (kW) = Power (W) / 10002. **Calculate Energy Consumption**: - Energy consumed (kWh) = Power (kW) × Time (hours)3. **Calculate Cost**: - Cost ($) = Energy consumed (kWh) × Electricity cost rate ($/kWh)**Example Calculation:****(a) Incandescent Light Bulb:**1. Power = 60.0 W = 60.0 / 1000 kW = 0.060 kW2. Energy consumed = 0.060 kW × 24 hours = 1.44 kWh3. Cost = 1.44 kWh × $0.18/kWh = $0.26**(b) LED Light Bulb:**1. Power = 8.50 W = 8.50 / 1000 kW = 0.0085 kW2. Energy consumed = 0.0085 kW × 24 hours

Answered: Image /qna-images/answer/aac18299-dbfb-4061-8370-2bfe9761e14e.jpg

In a particular area of the country, electrical energy costs $0.18 per kilowatt-hour. (Round your answers, in dollars, to at least two decimal places.) (a) How much does it cost to operate an old-style incandescent 60.0-W light bulb continuously for 24 hours? $ (b) A modern LED light bulb that emits as much visible light as a 60.0-W incandescent only draws 8.50 W of power. How much does it cost to operate this bulb for 24 hours? $ (c) A particular electric oven requires a potential difference of 220 V and draws 20.0 A of current when operating. How much does it cost to operate the oven for 3.90 hours? $

In a particular area of the country, electrical energy costs $0.18 per kilowatt-hour. (Round your answers, in dollars, to at least two decimal places.) (a) How much does it cost to operate an old-style incandescent 60.0-W light bulb continuously for 24 hours? $ (b) A modern LED light bulb that emits as much visible light as a 60.0-W incandescent only draws 8.50 W of power. How much does it cost to operate this bulb for 24 hours? $ (c) A particular electric oven requires a potential difference of 220 V and draws 20.0 A of current when operating. How much does it cost to operate the oven for 3.90 hours? $

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Related questions

Q: An 80 kg astronaut has gone outside his space capsule to do some repair work. Unfortunately, he…

Q: 4.A 2-W light bulb is connected to a 6-volt battery and left on for 20 minutes. (a)What is the…

Q: A solar cell has a light-gathering area of 10 cm² and produces 0.2 A at 0.8 V (DC) when illuminated…

Q: How much energy per unit time does a 6.0 V portable radio use if it draws 250 mA of current?

A: Given data :- Voltage V = 6 volt…

Q: The electric circuit to which a television set is connected is protected by a 15 A circuit breaker.…

Q: A copper transmission cable 43 km long and 5.3 cm in diameter carries a current of 41 A. How much…

Q: QUESTION 9 A solar panel measures 80 cm x 57 cm. In direct sunlight, the panel delivers 3.1 A at 15…

A: Given,

Q: 320-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,090 A.…

Q: A 100 watt bulb is rated for use in a 120 volt line. During a brownout the actual voltage drops to…

Q: A string of 26 identical Christmas tree lights are connected in series to a 120 V source. The string…

A: Given Voltage of source is V= 120 V power dissipated in the string is P=65 W. The relation between…

Q: 1. A 1000 W television was used to watch BTS concert for1 hour and 30 minutes. How much energy is…

Q: A current of 0.3 A is passed through a lamp for 2 minutes using a 6-V power supply. The energy (in…

A: Current I = 0.3 A Time t = 2 minutes = 2 * 60 s = 120 s Potential difference V = 6 Volts We need to…

Q: An electric current in a conductor varies with time according to the expression I(t) =…

A: Electric current is generated due to the flow of charges. It is the rate of change of charge with…

Q: A 793 W television, a 172 W microwave, and a 65.2 W computer are plugged into an outlet in a 20 A…

Q: Exploding shoes. The rain-soaked shoes of a person may explode if ground current from nearby…

A: density of water (d) = 1000 kgm3Latent heat of vapourisation = 2256000 JKg Time (t) = 2.33 ms…

Q: A student kept his 9.0 V, 7.0 W radio turned on at full volume from 9:00 P.M. until 2:00 A.M. How…

Q: A 70-Vac source has the following waveform. Determine: a. Vpk b. Vpk-pk C. Vrms d. Period e.…

A: Given: RMS voltage = 70 V

Q: A 400 W immersion heater is placed in a pot containing 2.00 L of water at 20C. (a) How long will…

A: Given : Power of heater, P = 400 W Volume of water, V = 2.0 L initial…

Q: A standard flashlight battery can deliver about 2.0 Wh of energy before it runs down. (a) If a…

A: a) The cost of operating a 100W lamp for 8 hrs using batteries if a battery coast US$0.80,

Q: A 60-W incandescent light bull costs $0.41. An equivalent 18-W compact fluorescent (CFL) bulb costs…

Q: (1) An incandescent light bulb produces 5.85 Joules of light energy each second. This bulb is 7.80%…

A: Given data:Incandescent light bulb light energy per second: 5.85 Joules/secondIncandescent light…

Q: 0.058 A of electric current is passing through a resistor, and the voltage across the resistor is…

Q: 13. An energy-efficient fluorescent lightbulb operating at power P1 = 28 W can produce the same…

A: Given data: Energy-efficient fluorescent lightbulb operating power, P1=28 W Conventional…

Q: The power supplied to a typical black-and-white television set is 90 W when the set is connected to…

A: Given data: Power (P) = 90 W Voltage (V) = 120 V Time (t) = 1 hour Required: Energy consumed (E)

Question

100%

### Electrical Energy Cost Calculation

In a particular area of the country, electrical energy costs $0.18 per kilowatt-hour. (Round your answers, in dollars, to at least two decimal places.)

#### (a) Incandescent Light Bulb
How much does it cost to operate an old-style incandescent 60.0-W light bulb continuously for 24 hours?
$ [____]

#### (b) LED Light Bulb
A modern LED light bulb that emits as much visible light as a 60.0-W incandescent only draws 8.50 W of power. How much does it cost to operate this bulb for 24 hours?
$ [____]

#### (c) Electric Oven
A particular electric oven requires a potential difference of 220 V and draws 20.0 A of current when operating. How much does it cost to operate the oven for 3.90 hours?
$ [____]

**Explanation for Educational Context:**

##### Understanding the Problem:
- **Electricity Cost Rate**: The cost of electricity is given as $0.18 per kilowatt-hour (kWh).
- **Conversion Factor**: Since appliances’ power ratings are given in watts (W), it’s useful to remember that 1 kilowatt (kW) is equal to 1000 watts (W).

##### Steps for Calculation:
1. **Convert Power to kilowatts**:
- Power (kW) = Power (W) / 1000

2. **Calculate Energy Consumption**:
- Energy consumed (kWh) = Power (kW) × Time (hours)

3. **Calculate Cost**:
- Cost ($) = Energy consumed (kWh) × Electricity cost rate ($/kWh)

**Example Calculation:**

**(a) Incandescent Light Bulb:**
1. Power = 60.0 W = 60.0 / 1000 kW = 0.060 kW
2. Energy consumed = 0.060 kW × 24 hours = 1.44 kWh
3. Cost = 1.44 kWh × $0.18/kWh = $0.26

**(b) LED Light Bulb:**
1. Power = 8.50 W = 8.50 / 1000 kW = 0.0085 kW
2. Energy consumed = 0.0085 kW × 24 hours

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

Problem 6: Suppose the cost of an incandescent bulb is 23 cents and that electricity costs 12 cents/kWh. Compact fluorescent lightbulbs (CFL), while they are more expensive, use 1/10 of the power for the same amount of illumination. What would be the maximum cost (in dollars) of a CFL such that the total cost (investment plus operating) would be the same for both CFL and incandescent 60 W bulbs? Assume both lightbulbs run for 1000 h.
7. Suppose a I = 0.57 A current flows through a mystery box; the current flows from a potential V = 0V to a potential V = 3.4V. (a) Which of these is true? A) The box releases power from the current B) The box supplies power to the current (b) How much power? A) 0.17 W B) 1.9W C) 1.94 W D) 5.96 W OV 0.57A -3.4V
An electric hot plate has a power output of 1.39 kW when connected to a 90.62 V source. What is the current (in Amperes) being drawn by the hot plate?
Using Kirchhoff's rules, find the following. (&1 = 70.6 V, 62 = 60.6 V, and 63 = 79.8 V.)
It seems hard to justify spending $4.00 for an LED lightbulb when an ordinary incandescent bulb costs $0.50. To see if it makes sense, compare a 60 W incandescent bulb that lasts 1000 hours to a 10 W LED bulb that lasts 20,000 hours. (These are typical values.) Both bulbs produce the same amount of visible light and are interchangeable.
A 12 volt car battery is being used to power a circuit with a total resistance of 0.5 Mega-ohm. a) What is the power (in watts) being used by this circuit? b) The circuit is switched on for exactly 27.3 days and then switched off. How much energy has the circuit used (in joules AND kilowatt-hours) in this time? c) If the current rate of hydro use is 10.1 cents per kilowatt-hour, how much would the use of this circuit contribute to your hydro bill (assuming that no other charges apply)?
Suppose a battery operates a 2.25 W electric clock for 19.5 months. 1. What is the available energy content, in joules, of the battery? 2. How many years can a battery that supplies 7.75 × 104 J run a pocket calculator that consumes energy at the rate of 1.05 × 10-3 W?
A 690-W TV receiver is turned on for 4 hours with nobody watching it. If electricity costs 10 cents/kWh, how much money is wasted? The wasted money is cents.
A 1500 W microwave oven runs off of a 240 V supply. The current drawn is by the microwave is 6.25Amps a) If the electricity cost is $0.0925 per kWh, how much does it cost to run the microwave for 5 min?
How much could you pay to replace a 60 W incandescent light bulb with a 15 W compact fluorescent bulb if electricity in your area costs 10 cents per kilowatt hour and you paid 25 cents for the incandescent bulb? You estimate that you will break even after about 1000 hours.
2. what could be the voltage drop and power loss due to the resistance. If the resistance of a cable is 100ohms, with a current of 20mA ? Voltage drop = 2 volt, power loss = 4*10^-4 wa 3. calculate the attenuation coefficient per kilometer. of an optical cable of length 5 Km, with an input power 50watts and output power 40watts, Enter your answer 4. what should be the pulling tension for 4 pair UTP 6 AWG ?, If a 4 pair UTP 24AWG is used to pull with a maximum tension of 110newtons ? 27.5 newton 5. Find the fiber core radius If the bend radius of fiber optic cable is 4mm,
The typical replacement for a 100-W incandescent bulb is a 20-W LED bulb. The 20-W LED bulb can provide the same amount of light output as the 100-W incandescent light bulb. What is the cost savings for using the LED bulb in place of the incandescent bulb for one year, assuming $0.10 per kilowatt-hour is the average energy rate charged by the power company? Assume that the bulb is turned on for three hours a day.