Class X Sciences [papers from previous years] A lamp rated 100 W at – InterviewSolution

1.	Class X Sciences [papers from previous years] A lamp rated 100 W at 220 V is connected to the mains electric supply. What current is drawn from the supply line if the voltage is 220 V?
Answer» POWER (P)= 100WVoltage (V)= 220VWe KNOW, P=VI, where I is the currentTherefore, I=P/VI=100/220I=0.45 A

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