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Question
Two tungsten bulbs of power 50 W and 60 W work on 220 V potential difference. If they are connected in parallel, how much current will flow in the main conductor?
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Solution
Given: P1 = 50 W, P2 = 60 W and V = 220 V
To find I = ?
Formula: P = VI
We know,
Total Power (P) = P1 + P2
= 50 + 60
= 110 W
We know, P = VI
⇒ I = `"P"/"V"`
= `110/220`
= `1/2`
I = 0.5 A
The current of 0.5 A will flow in the main conductor.
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