Question
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Solving time: 4 mins
Several electric bulbs designed to be used on a 220 V electric supply line, are rated 10 W. How many lamps can be connected in parallel with each other across the two wires of 220 V line if the maximum allowable current is 5 A?
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Text solutionVerified
Given,
Power rating of each bulb,
Total current,
Let number of lamps in parallel be .
Let individual resistance of each lamp be .
From Joule's law of heating,
For resistances in parallel,
From (ii) and (iii),
Substituting (i) in (iv),
From Ohm's Law,
Substituting (v) in (vi),
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Uploaded on: 2/29/2024
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Question Text | Several electric bulbs designed to be used on a 220 V electric supply line, are rated 10 W. How many lamps can be connected in parallel with each other across the two wires of 220 V line if the maximum allowable current is 5 A? |
Updated On | Feb 29, 2024 |
Topic | Electricity |
Subject | Science |
Class | Class 10 |
Answer Type | Text solution:1 Video solution: 27 |
Upvotes | 2822 |
Avg. Video Duration | 6 min |