calculate the electrical energy consumed by a 1500W toaster in 45 minutes. what will be the cost of using the same for 1 month if one unit of elctricitycocts Rs.4/-?
Answers
Answer:
Given –
- Energy consumed by the toaster = 1500 W
- Time par day = 45 minutes = 3/4 hour.
- Used for 1 month (30 days)
- Cost of electricity = Rs. 4 per unit
To Find –
- Cost of the electricity.
Solution –
The Total energy consumed by the toaster in 30 days will be : 1500 W × 3/4 hour × 30 days
➸ 750 × 3/2 × 30
➸ 375 × 3 × 30
➸ 1,125 × 30
➸ 33,750 W h
➸ 33.75 kWh
Hence, the cost of energy consumed :
➸ Rs. 4 × 33.75
➸ Rs. 135
So, the total cost of energy consumed by the toaster in 30 days will be Rs. 135.
Given :
- Power = 1500 W
- Time (t) = 45 mins = 45/60 = 0.75 h
To find :
- Energy consumed by the toaster for 1 month.
- Cost of the energy used by toaster in 1 month at rate of Rs. 4 per unit
Solution :
As we know that the unit of Commercial Electricity is kWh. First of all we have to convert Power to Kilo Watt, then we can find cost.
⇒Power = 1500 W
⇒Power = 1500/1000
⇒Power = 1.5 kW
Power Consumed by toaster in one day is 1.5 kW
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And, it is used for 45 mins which is 0.75 hours for 1 month, So the energy consumed in one month will be :
⇒Energy = Power * time
⇒Energy = 1.5 * 0.75 * 30
⇒Energy = 33.75
Energy consumed in one month is 33.75 units or kWh
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Now, we have to find cost of energy used at rate of Rs. 4 per unit
⇒ Cost = Energy * price
⇒Cost = 33.75 × 4
⇒Cost = 135
Energy Consumed by the toaster for 1 month is Rs. 135