Calculate the energy consumed by 120W toaster in 20 minutes.

Asked by Last Modified  

9 Answers

Learn Science +1

Follow 18
Answer

Please enter your answer

Expert in IIT NEET entrance exams

Energy= power×time P =120 W =120 J/s Time t = 20 min = 20×60 second= 1200 second E = 120× 120 = 144000joul E =144×1000 joul =144 kilo joul
Comments

POWER=120W TIME=20 min=1200sec Energy=Power*Time E=120W*1200sec E=144000J E=144000J=144Kilojoule
Comments

Tutor

Total energy is the product of power and time... But we have to convert both to the same unit. 20 min= 20*60sec= 1200 sec.. Energy= 1200*120 J =144000 J
Comments

Tutor

120 W is 120 Joules per second, and 20Minutes is 1200 seconds. Hence the total energy consumed is 1200seconds*120W = 144000 Joules or 144 Kilo Joules.
Comments

Energy E=P.t where time t in second E=120.20.60=144000 Watt.sec=144000joule E=144 kilojoule
Comments

Maths Trainer with 23 years of experience

Given: Power=120W Time=t=20min=20X60Sec =1200Sec Power P = Work W ( or Energy E)/ Time taken t Then, Energy E= Power P × Time t So, Energy E= 120 W× 1200sec = 144000 J = 144 KJ.
Comments

Tutor

Silvering of a mirror is the process to convert a plain glass into mirror.After silvering the glass don't allow light to refract through it..So we get a reflecting mirror
Comments

Teacher

Energy consumed will be 120 x 20 x 60 = 144000 J or 144 kJ
Comments

Tutor

Energy = power / time. = 120/120 = 1 Joule
Comments

View 7 more Answers

Related Questions

What is potential difference? Give its unit with definition.
It is the difference in electric potential between two points per unit electric charge. Unit is Volt
Ankit
0 0
6
Why do birds fly back to their nest in the evening?
Birds can't see the objects clearly in night times due to the absence of rod cells so they are back to fly their nests
Amandeep
0 0
5
The increase in demand for energy is affecting our environment adversely. List two effects
1. Clearing of forest for construction of new hydroelectric power plants. 2. Pollutants from thermal plants affects the air quality and near by water bodies. 3. Excess mining of coal for running Thermal palnts.
Jitender
0 0
5
Why does an aqueous solution of acid conduct electricity?
Pure water is a non-conductor of electricity. But by adding a little acid ir even a bit of salt, it becomes a conductor and hence it conducts electricity.
Yash
0 0
7
Suggest some good reference books for CBSE Class IX Mathematics and General Science (Physics, Chemistry & Biology).
Mathematics by R.S. Agrawal' Physics, Chemistry and Biology by S. Chand publications will be good.
Rupa
0 1
9

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons


Question Highlited In SSC Exam For State Board Subject Science
1. Resistant in series or parallel 2. Ohms law with derivation, coulombs law and numericals for finding price and usage. 3. S, P, D, F block and their significance. 4. Work and energy principle. 5....


CBSE Class 10 Chemistry Lesson 1 - CRs and Equations
Chemical Reaction The reaction in which reactants are converted into products is called a chemical reaction. Eg. C + O2 --> CO2 Reactants Reactants are the substances that take part in a chemical...
K

Short Summary on What is Acid ?
ACID It is defined as the substance which release H+ ions ( hydronium ion) when dissolve in water. Sour in taste Turn blue litmus → red Conduct electricity (in aqueous solution) Release H₂...

Recommended Articles

Mohammad Wazid is a certified professional tutor for class 11 students. He has 6 years of teaching experience which he couples with an energetic attitude and a vision of making any subject easy for the students. Over the years he has developed skills with a capability of understanding the requirements of the students. This...

Read full article >

Raghunandan is a passionate teacher with a decade of teaching experience. Being a skilled trainer with extensive knowledge, he provides high-quality BTech, Class 10 and Class 12 tuition classes. His methods of teaching with real-time examples makes difficult topics simple to understand. He explains every concept in-detail...

Read full article >

Sandhya is a proactive educationalist. She conducts classes for CBSE, PUC, ICSE, I.B. and IGCSE. Having a 6-year experience in teaching, she connects with her students and provides tutoring as per their understanding. She mentors her students personally and strives them to achieve their goals with ease. Being an enthusiastic...

Read full article >

Quest Academy is a professional Bangalore based NEET and JEE (Main + Advanced) training institute. The academy was incorporated in 2015 to cater to the needs of students, who aim to crack competitive exams by connecting with the best brains around. The institute helps students enhance their skills and capabilities through...

Read full article >

Looking for Class 10 Tuition ?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you