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An immersion heater rated 4000W is used continuously for 1hour 30 minutes. Calculate the cost of operation at Ksh.6.70 per unit.
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Jul 13, 2021
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Physics Form 3
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anony mous
An immersion heater rated 4000W is used continuously for 1hour 30 minutes. Calculate the cost of operation at Ksh.6.70 per unit.
heating effect of electric current
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Jul 13, 2021
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anony mous
4000w=4Kw × 1.5hrs × 6.70
=ksh.40.20
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