An electrical device uses a current of 2A for 3 hours from a 15V battery . find the work done
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HELLO MATE HERE IS THE ANSWER
CURRENT= 2A
TIME =3HR
POTENTIAL DIFFERENCE =15V
WORK=VIT
=2*3*15
=90WH
=90*3600=324000J
HOPE IT HELPS YOU
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venkey444:
its is correct because 15 x 2 x 3=90WH
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Answered by
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We know that
Work Done = Voltage x Charge = V x Q
But Q = Current x Time = i x t
⇒ Work Done = V x i x t = 15 x 2 x 3 hrs = 30 x 3 x 60 x 60 = 324000 Joules
THE ANSWER IS 90WH because 15 x 2 x 3= 90
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