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An electric heater of 1000W is …

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An electric heater of 1000W is used for 2 hour a day. What is costing of using it for a month of 28 days , if one unit costs Rs. 3 .

Posted by Devansh Singhal 1 year, 8 months ago

CBSE > Class 09 > Science

4 answers

Preeti Dabral 1 year, 8 months ago

energy consumed by heater of 1000W for 2h in one day=1000/1000×2 =2units number of units=W×h×day/1000 energy consumed by heater in 28 day 2×28=56units cost of 1unit =RS 3 cost of 56unit=3×56=RS 168

Kartik Thakur 1 year, 7 months ago

Rs. 168

Yash Yash Patel 1 year, 7 months ago

The answer is १६८. Explanation: Given power of a electric heater= १०००w = kw Time per day = २×२०० days= ५६ The formula of energy is given by= Energy= १×५६ = Energy= ५६ kWh Now १kWh costs RS.३ (a unit in the electricity Bill is represented in KWH or kilowatt Hour. This is the actual electricity of energy used). Then the costs of ५६ KWH will be = ३×५६= RS.१६८

Jayanthi Sagu 1 year, 8 months ago

56x3=168

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