Physics, asked by arslanhabib, 4 months ago


Q # 4. How much will it cost to operate a 1500-W quartz heater for 48 hours if the cost of
electricity is Rs 7/kWh?​

Answers

Answered by XxxRAJxxX
4

Answer : Rs. 504

Step-by-Step Explanation:

  • Power of the quartz heater = 1500W = 1.5kW
  • Time for which it is operated. = 48 hours
  • Rate = Rs. 7 kW/h
  • The total cost to operate it for 48 hours = ?

Total Power = Power x Time

=> 1.5 kW x 48 hours

Total Power => 72 kW

Rate of Kilo watt per hour => Rs. 7

Total Cost for 48 hours => Rs. 7 x 72 kW

=> Rs. 504

Hence, It will cost Rs. 504 to operate a 1500 W qaurtz heater for 48 hours at the rate of Rs. 7 kW/h.

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