There are three bulbs of 60W, 100W, and 200W. Which bulb has the thickest filament?
Correct answer: B. 200W
- A. 100W
- B. 200W
- C. 60W
- D. None of these options are correct
Explanation
200W bulb has the thickest filament is correct. Higher the power rated, lower will be the resistance. More thickness will lead to low resistance.
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Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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