1.

An electric lamp of 18A, 60W is connected across a battery of 10V. If the lamp gives out 7.5 J/s for giving out light, What is the percentage of energy that the lamp transforms to light?

Answer»

An electric lamp of 18A, 60W is connected across a battery of 10V. If the lamp gives out 7.5 J/s for giving out light, What is the percentage of energy that the lamp transforms to light?



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