An eletric iron is rated at 1000W the amount of heat generated is 15min is equal to
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An eletric iron is rated at 1000W the amount of heat generated is 15min is equal to
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☆ Given:-
☆ To find:-
☆ Now,
We know that,
=》 Heat (H) = I²RT ----eq(1)
Also,
=》 V = IR ----eq(2)
So putting V in place of IR in eq(1) we get,
=》 H = VIT. ----eq(4)
Also,
=》 Power (P) = VI.
Therefore by putting P in place of VI in eq(4) we get,
=》 H = PT
=》 H = 1000 × 900.
=》 H = 9,00,000 Joule
Therefore Heat generated by the bulb in 15 minutes is 9,00,000 Joule.
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