Question

6. An electric bulb is rated 220V and 100W. when it is operated on 110V, the power consumed will be
(b)751
(e 50W
(d)25W
​

Answer 1

Answer:

Explanation:

Let the resistance be R

Given power=100W

V^2/R=100

R=220*220/100 ohms

R=484 ohms

Power delivered now=V^2/R=110*110/22*22

Power=5*5=25 Watt

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