Question 14 An electric heater is rated 1500 W. How much energy does it use in 10 hours?
Class 9 - Science - Work and Energy Page 159
Answers
Answered by
2
energy = (voltage × current )× time
=(14 ×1500)×10
=210×10
=2100 --answer
=(14 ×1500)×10
=210×10
=2100 --answer
Answered by
7
Power = 1500 W,
Time = 10 hours
Now, Power = Energy/Time
Therefore, Energy = Power × Time
= 15000 Wh = 15 kWh
= 15 × 3.6 × 10^6 J
= 5.4 × 10^7 J
Time = 10 hours
Now, Power = Energy/Time
Therefore, Energy = Power × Time
= 15000 Wh = 15 kWh
= 15 × 3.6 × 10^6 J
= 5.4 × 10^7 J
Similar questions