if an electric device rated 230v 5A is operated how much energy is used in joules ?
plz mention the formula and how it comes i will mark brainst
plz mention the formula and how it comes i will mark brainst
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power(p)= voltage (v)*current (I)
p=230*5=1150 watt
energy=power*time
energy=1150*1=1150joules
Answer:
(i) Let Energy consumed =Power×Time
=1000×2=2000kWh
(ii) 1kWh=3.6×10
6
J
∵ Energy consumed =2000×3.6×10
6
J
=7.2×10
9
J.