Register

An 100W light bulb is on 6 hours work out the energy (kWh) used and the cost of it (1kWh = £0.1359) with working out please

An 100W light bulb is on 6 hours work out the energy (kWh) used and the cost of it (1kWh = £0.1359) with working out please
71.5k views
2 votes
An 100W light bulb is on 6 hours work out the energy (kWh) used and the cost of it (1kWh = £0.1359) with working out please

User Nir Golan
by
8.4k points

1 Answer

3 votes
1,000 W = 1 kW
100 W = 0.1 kW

(0.1 kW) x (6 h) = 0.6 kWh <=== energy

(0.6 kWh) x (£0.1359/kWh) = £0.0815 <=== cost of it
User Lasitha Yapa
by
8.1k points
← Prev Question Next Question →

Related questions

User Pranav
asked Nov 7, 2024 159k views
Show that 1Kwh is equal to 3.6MJ of energy.​
Pranav asked Nov 7, 2024
by Pranav
8.6k points
1 answer
5 votes
159k views
User Jenya Pu
asked Aug 17, 2018 179k views
How much would a 1kwh cost if 631kwh costs £70? show working please!!!
Jenya Pu asked Aug 17, 2018
by Jenya Pu
7.8k points
2 answers
1 vote
179k views
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories

Other Questions

At sea level, water boils at 100 degrees celcius and methane  boiled at -161 degrees celcius. Which of these substances has a stronger force of attraction between its particles? Explain your answer
A snowball is launched horizontally from the top of a building at v = 16.9 m/s. If it lands d = 44 meters from the bottom, how high (in m) was the building?
What type of rock is the Haystack rock (igneous, Metamorphic, or Sedimentary)
Link Copied!