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A house is fitted with five tubes each of 40W. If all the tubes are lighted for 20 hours and if the cost of electrical unit is Rs 0.50 the total cost of electricity consumed is:a) 20 Rsb) 4 Rsc) 6 Rsd) 28 Rs
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A house is fitted with five tubes each of 40W. If all the tubes are li...
Total power consumed=5*40W=200W=0.2kWPower consumed in units=0.2kW*20h=4kWhElectricity consumed=4kWh*Rs.0.5=Rs.2I think that the question may be wrong or my sol. may be wrong...
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A house is fitted with five tubes each of 40W. If all the tubes are li...
Given:
- Number of tubes: 5
- Wattage of each tube: 40W
- Hours of usage: 20
- Cost of electrical unit: Rs 0.50
To find:
- Total cost of electricity consumed
Solution:
Step 1: Calculate the total power consumed by the tubes
Since there are 5 tubes, and each tube has a power rating of 40W, the total power consumed by the tubes can be calculated as:
Total power consumed = Power per tube * Number of tubes
= 40W * 5
= 200W
Step 2: Convert the power consumed to kilowatts (kW)
To calculate the electricity consumption in units, we need to convert the power consumed from watts to kilowatts (kW).
Power in kilowatts = Power in watts / 1000
= 200W / 1000
= 0.2kW
Step 3: Calculate the total energy consumed
The total energy consumed can be calculated by multiplying the power consumption in kilowatts with the hours of usage.
Total energy consumed = Power in kilowatts * Hours of usage
= 0.2kW * 20
= 4kWh
Step 4: Calculate the total cost of electricity consumed
To calculate the total cost of electricity consumed, we need to multiply the total energy consumed with the cost of electrical unit.
Total cost of electricity consumed = Total energy consumed * Cost of electrical unit
= 4kWh * Rs 0.50
= Rs 2
Answer:
The total cost of electricity consumed is Rs 2. Therefore, the correct option is (b) 4 Rs.
- Number of tubes: 5
- Wattage of each tube: 40W
- Hours of usage: 20
- Cost of electrical unit: Rs 0.50
To find:
- Total cost of electricity consumed
Solution:
Step 1: Calculate the total power consumed by the tubes
Since there are 5 tubes, and each tube has a power rating of 40W, the total power consumed by the tubes can be calculated as:
Total power consumed = Power per tube * Number of tubes
= 40W * 5
= 200W
Step 2: Convert the power consumed to kilowatts (kW)
To calculate the electricity consumption in units, we need to convert the power consumed from watts to kilowatts (kW).
Power in kilowatts = Power in watts / 1000
= 200W / 1000
= 0.2kW
Step 3: Calculate the total energy consumed
The total energy consumed can be calculated by multiplying the power consumption in kilowatts with the hours of usage.
Total energy consumed = Power in kilowatts * Hours of usage
= 0.2kW * 20
= 4kWh
Step 4: Calculate the total cost of electricity consumed
To calculate the total cost of electricity consumed, we need to multiply the total energy consumed with the cost of electrical unit.
Total cost of electricity consumed = Total energy consumed * Cost of electrical unit
= 4kWh * Rs 0.50
= Rs 2
Answer:
The total cost of electricity consumed is Rs 2. Therefore, the correct option is (b) 4 Rs.
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A house is fitted with five tubes each of 40W. If all the tubes are lighted for 20 hours and if the cost of electrical unit is Rs 0.50 the total cost of electricity consumed is:a) 20 Rsb) 4 Rsc) 6 Rsd) 28 Rs
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A house is fitted with five tubes each of 40W. If all the tubes are lighted for 20 hours and if the cost of electrical unit is Rs 0.50 the total cost of electricity consumed is:a) 20 Rsb) 4 Rsc) 6 Rsd) 28 Rs for Class 10 2025 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about A house is fitted with five tubes each of 40W. If all the tubes are lighted for 20 hours and if the cost of electrical unit is Rs 0.50 the total cost of electricity consumed is:a) 20 Rsb) 4 Rsc) 6 Rsd) 28 Rs covers all topics & solutions for Class 10 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A house is fitted with five tubes each of 40W. If all the tubes are lighted for 20 hours and if the cost of electrical unit is Rs 0.50 the total cost of electricity consumed is:a) 20 Rsb) 4 Rsc) 6 Rsd) 28 Rs.
A house is fitted with five tubes each of 40W. If all the tubes are lighted for 20 hours and if the cost of electrical unit is Rs 0.50 the total cost of electricity consumed is:a) 20 Rsb) 4 Rsc) 6 Rsd) 28 Rs for Class 10 2025 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about A house is fitted with five tubes each of 40W. If all the tubes are lighted for 20 hours and if the cost of electrical unit is Rs 0.50 the total cost of electricity consumed is:a) 20 Rsb) 4 Rsc) 6 Rsd) 28 Rs covers all topics & solutions for Class 10 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A house is fitted with five tubes each of 40W. If all the tubes are lighted for 20 hours and if the cost of electrical unit is Rs 0.50 the total cost of electricity consumed is:a) 20 Rsb) 4 Rsc) 6 Rsd) 28 Rs.
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