A current of 1A flows when an electric bulb is
connected to 220 V mains. What would be the
current when the same bulb is connected to 110 V
mains ?
OR
Find the ratio of resistances for two bulbs of
220V-60W and 110V-60W.
Explain why a new element is formed by a-
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Answer:
> For the ratio of their resistance firstly calculate their resistance by this formula,
V1=220 ,. P1=60
V2=110 , P2 =60
the ratio between them is 4 : 1
hope it will help you.
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