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An electric bulb of 60 w is used for 6 h per day. Calculate the ‘units of energy consumed in one day by the bulb
- a)0.60 ‘units’
- b)0.36 ‘units’
- c)0.45 ‘units
- d)0.24 ‘units’
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
An electric bulb of 60 w is used for 6 h per day. Calculate the ‘unit...
Understanding Energy Consumption
To calculate the energy consumed by a 60-watt bulb used for 6 hours a day, we first need to understand the concept of watts, which is a unit of power.
Step 1: Calculate Daily Energy Consumption
- The formula to calculate energy consumption in kilowatt-hours (kWh) is:
- Energy (kWh) = Power (kW) × Time (h)
- Convert watts to kilowatts:
- 60 watts = 0.06 kW
Step 2: Substitute Values
- Using the formula:
- Energy (kWh) = 0.06 kW × 6 h
Step 3: Perform the Calculation
- Multiply the values:
- Energy (kWh) = 0.36 kWh
Step 4: Convert to Units
- In the context of electricity, 1 unit is equivalent to 1 kWh.
- Therefore, the energy consumed by the bulb in one day is 0.36 units.
Conclusion
- The correct answer is option 'B' - 0.36 units.
- This means that using a 60-watt bulb for 6 hours will consume 0.36 units of energy per day.
This calculation helps in understanding how much energy different appliances use, which is essential for managing electricity costs effectively.
To calculate the energy consumed by a 60-watt bulb used for 6 hours a day, we first need to understand the concept of watts, which is a unit of power.
Step 1: Calculate Daily Energy Consumption
- The formula to calculate energy consumption in kilowatt-hours (kWh) is:
- Energy (kWh) = Power (kW) × Time (h)
- Convert watts to kilowatts:
- 60 watts = 0.06 kW
Step 2: Substitute Values
- Using the formula:
- Energy (kWh) = 0.06 kW × 6 h
Step 3: Perform the Calculation
- Multiply the values:
- Energy (kWh) = 0.36 kWh
Step 4: Convert to Units
- In the context of electricity, 1 unit is equivalent to 1 kWh.
- Therefore, the energy consumed by the bulb in one day is 0.36 units.
Conclusion
- The correct answer is option 'B' - 0.36 units.
- This means that using a 60-watt bulb for 6 hours will consume 0.36 units of energy per day.
This calculation helps in understanding how much energy different appliances use, which is essential for managing electricity costs effectively.
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Community Answer
An electric bulb of 60 w is used for 6 h per day. Calculate the ‘unit...
P = 60 W
= 0.06 kW
Time, t = 6 h
Energy = power × time
= 0.06 kW × 6 h
= 0.36 kWh
= 0.36 ‘units’
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