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Calculate the electrical energy consumed by an electric bulb of 200 watt in 15 hours
- a)3 kwh
- b)5 kwh
- c)6 kwh
- d)30 kwh
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
Calculate the electrical energy consumed by an electric bulb of 200 wa...
To calculate the electrical energy consumed by an electric bulb, we need to use the formula:
Energy (in kilowatt-hours) = Power (in kilowatts) × Time (in hours)
Given:
Power of the electric bulb = 200 watts
Time = 15 hours
Using the formula, we can calculate the energy consumed as follows:
Energy = (Power × Time)/1000
Substituting the given values:
Energy = (200 × 15)/1000
= 3000/1000
= 3 kilowatt-hours (kWh)
Therefore, the electrical energy consumed by the electric bulb in 15 hours is 3 kWh.
Explanation:
- The formula for calculating electrical energy is Energy = Power × Time.
- In this case, the power of the electric bulb is given as 200 watts and the time is given as 15 hours.
- To use the formula, we need to convert the power from watts to kilowatts by dividing it by 1000.
- After substituting the values into the formula, we calculate the energy consumed as 3 kilowatt-hours (kWh).
- This means that the electric bulb consumes 3 kilowatt-hours of electrical energy over a period of 15 hours.
Energy (in kilowatt-hours) = Power (in kilowatts) × Time (in hours)
Given:
Power of the electric bulb = 200 watts
Time = 15 hours
Using the formula, we can calculate the energy consumed as follows:
Energy = (Power × Time)/1000
Substituting the given values:
Energy = (200 × 15)/1000
= 3000/1000
= 3 kilowatt-hours (kWh)
Therefore, the electrical energy consumed by the electric bulb in 15 hours is 3 kWh.
Explanation:
- The formula for calculating electrical energy is Energy = Power × Time.
- In this case, the power of the electric bulb is given as 200 watts and the time is given as 15 hours.
- To use the formula, we need to convert the power from watts to kilowatts by dividing it by 1000.
- After substituting the values into the formula, we calculate the energy consumed as 3 kilowatt-hours (kWh).
- This means that the electric bulb consumes 3 kilowatt-hours of electrical energy over a period of 15 hours.
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Community Answer
Calculate the electrical energy consumed by an electric bulb of 200 wa...
P = W/t ⇒ w = P × t = 200 × 15 = 3000 wh
Or W = 3 kwh
Or W = 3 kwh
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