Question

A bulb of power 40w is used for 12.5 hours each day for 30 days. Calculate the electrical energy consumed

Answer 1

Electrical energy consumed=power × time

1watt=1joule/sec.


◆40×12.5×3600×30

=540,000,00 joules

=
$54 \times {10}^{6} joules$

➡️➡️Hope it will help you‼️

Answer 2

P=40W
=40/1000kW
T=12.5×30
=375hr

E=Pt
=40/1000 × 375
=11.3unit




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