Calculate the current through a 60 W lamp rated for 250 V. If the line voltage falls to 200 V, how is power consumed by the lamp affected?
Current Electricity
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Question

Calculate the current through a 60 W lamp rated for 250 V. If the line voltage falls to 200 V, how is power consumed by the lamp affected?

KnowledgeBoat · Accepted Answer

Given, Power (P) = 60 W Voltage (V) = 250 V We know that, Power (P) = VI Substituting the values in the formula above, we get, Hence, current through the lamp = 0.24 A Power consumed when voltage is 200 V = ? Resistance of lamp (R) = Substituting the values in the formula, we get, From relation, P = Substituting the values in the formula, we get, Hence, power consumed reduces to 38.4 W

Physics

Calculate the current through a 60 W lamp rated for 250 V. If the line voltage falls to 200 V, how is power consumed by the lamp affected?

Current Electricity

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