If the energy supplied to a circuit for 4hrs 15 minutes at 800 j/sec what would be the energy consumed?
- 3.4 KW Hrs.
- 3400 KW Hrs.
- 340 KW Hrs.
Explanation
Power is 800 J/s = 800 W = 0.8 kW. The time is 4 h 15 min = 4.25 h. Energy = power * time = 0.8 kW * 4.25 h = 3.4 kWh, confirming the marked answer. The larger figures come from forgetting to convert watts to kilowatts.
svmadbhavi asking:
sir how it is calculated 3.4 kw
Community Comments (1)
D
dimky Posts: 514 30.11.2014 / 17:18
calculate how much J will be supplied in 4 hours and 15 mins, after that convert that calculation from MJ to KW/h.
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