Class 10 Exam > Class 10 Questions > An electric bulb is marked 18watt-240 volt. I...
Start Learning for Free
An electric bulb is marked 18watt-240 volt. If it is used across 240 V power line for one hour daily, calculate the number of days to consume 1 unit of electric energy.
- a)54.5 days
- b)57.5 days
- c)50.5 days
- d)55.5 days
Correct answer is option 'D'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
An electric bulb is marked 18watt-240 volt. If it is used across 240 V...
Let n be the number of days
Here, work done is 36 x 105 J = (18 J/s) x n x 1 x 60 x 60
Thus, n = 55.5 days
Most Upvoted Answer
An electric bulb is marked 18watt-240 volt. If it is used across 240 V...
Calculation of Energy Consumption of Electric Bulb
Given data:
Power of electric bulb (P) = 18 watt
Voltage (V) = 240 V
Time (t) = 1 hour
Number of units = 1
Formula:
Energy consumed (E) = P × t
1 unit = 1 kWh = 1000 W × 1 hour
Calculation:
Energy consumed by electric bulb in 1 hour
E = P × t
E = 18 W × 1 hour
E = 18 Wh
Energy consumed by electric bulb in 1 day (24 hours)
E = 18 Wh × 24
E = 432 Wh
Energy consumed by electric bulb in 1 unit
1 unit = 1000 W × 1 hour
1 unit = 1000 Wh
Number of units consumed by electric bulb in 1 day
Number of units = Energy consumed ÷ 1000 Wh
Number of units = 432 Wh ÷ 1000 Wh
Number of units = 0.432 units
Number of days to consume 1 unit of electric energy
Number of days = 1 unit ÷ 0.432 units
Number of days = 2.3148 days ≈ 55.5 days
Therefore, the number of days for the electric bulb to consume 1 unit of electric energy is 55.5 days.
Given data:
Power of electric bulb (P) = 18 watt
Voltage (V) = 240 V
Time (t) = 1 hour
Number of units = 1
Formula:
Energy consumed (E) = P × t
1 unit = 1 kWh = 1000 W × 1 hour
Calculation:
Energy consumed by electric bulb in 1 hour
E = P × t
E = 18 W × 1 hour
E = 18 Wh
Energy consumed by electric bulb in 1 day (24 hours)
E = 18 Wh × 24
E = 432 Wh
Energy consumed by electric bulb in 1 unit
1 unit = 1000 W × 1 hour
1 unit = 1000 Wh
Number of units consumed by electric bulb in 1 day
Number of units = Energy consumed ÷ 1000 Wh
Number of units = 432 Wh ÷ 1000 Wh
Number of units = 0.432 units
Number of days to consume 1 unit of electric energy
Number of days = 1 unit ÷ 0.432 units
Number of days = 2.3148 days ≈ 55.5 days
Therefore, the number of days for the electric bulb to consume 1 unit of electric energy is 55.5 days.
Free Test
FREE
| Start Free Test |
Community Answer
An electric bulb is marked 18watt-240 volt. If it is used across 240 V...
1 unit = 1000 watt......... so,.. Work = watt X hours X days ..... 1000 = 18 X 1 X n...... so.., n = 1000/18.... n = 55.5 answer....
Attention Class 10 Students!
To make sure you are not studying endlessly, EduRev has designed Class 10 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 10.
|
Explore Courses for Class 10 exam
|
|
Top Courses for Class 10View all
An electric bulb is marked 18watt-240 volt. If it is used across 240 V power line for one hour daily, calculate the number of days to consume 1 unit of electric energy.a)54.5 daysb)57.5 daysc)50.5 daysd)55.5 daysCorrect answer is option 'D'. Can you explain this answer?
Question Description
An electric bulb is marked 18watt-240 volt. If it is used across 240 V power line for one hour daily, calculate the number of days to consume 1 unit of electric energy.a)54.5 daysb)57.5 daysc)50.5 daysd)55.5 daysCorrect answer is option 'D'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about An electric bulb is marked 18watt-240 volt. If it is used across 240 V power line for one hour daily, calculate the number of days to consume 1 unit of electric energy.a)54.5 daysb)57.5 daysc)50.5 daysd)55.5 daysCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An electric bulb is marked 18watt-240 volt. If it is used across 240 V power line for one hour daily, calculate the number of days to consume 1 unit of electric energy.a)54.5 daysb)57.5 daysc)50.5 daysd)55.5 daysCorrect answer is option 'D'. Can you explain this answer?.
An electric bulb is marked 18watt-240 volt. If it is used across 240 V power line for one hour daily, calculate the number of days to consume 1 unit of electric energy.a)54.5 daysb)57.5 daysc)50.5 daysd)55.5 daysCorrect answer is option 'D'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about An electric bulb is marked 18watt-240 volt. If it is used across 240 V power line for one hour daily, calculate the number of days to consume 1 unit of electric energy.a)54.5 daysb)57.5 daysc)50.5 daysd)55.5 daysCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An electric bulb is marked 18watt-240 volt. If it is used across 240 V power line for one hour daily, calculate the number of days to consume 1 unit of electric energy.a)54.5 daysb)57.5 daysc)50.5 daysd)55.5 daysCorrect answer is option 'D'. Can you explain this answer?.
Solutions for An electric bulb is marked 18watt-240 volt. If it is used across 240 V power line for one hour daily, calculate the number of days to consume 1 unit of electric energy.a)54.5 daysb)57.5 daysc)50.5 daysd)55.5 daysCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 10.
Download more important topics, notes, lectures and mock test series for Class 10 Exam by signing up for free.
Here you can find the meaning of An electric bulb is marked 18watt-240 volt. If it is used across 240 V power line for one hour daily, calculate the number of days to consume 1 unit of electric energy.a)54.5 daysb)57.5 daysc)50.5 daysd)55.5 daysCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
An electric bulb is marked 18watt-240 volt. If it is used across 240 V power line for one hour daily, calculate the number of days to consume 1 unit of electric energy.a)54.5 daysb)57.5 daysc)50.5 daysd)55.5 daysCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for An electric bulb is marked 18watt-240 volt. If it is used across 240 V power line for one hour daily, calculate the number of days to consume 1 unit of electric energy.a)54.5 daysb)57.5 daysc)50.5 daysd)55.5 daysCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of An electric bulb is marked 18watt-240 volt. If it is used across 240 V power line for one hour daily, calculate the number of days to consume 1 unit of electric energy.a)54.5 daysb)57.5 daysc)50.5 daysd)55.5 daysCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice An electric bulb is marked 18watt-240 volt. If it is used across 240 V power line for one hour daily, calculate the number of days to consume 1 unit of electric energy.a)54.5 daysb)57.5 daysc)50.5 daysd)55.5 daysCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Class 10 tests.
|
|
Explore Courses for Class 10 exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup