If voltage across a bulb rated 220 V-100 W drops by 2.5% of its rated value, the percentage of the rated value by which the power would decrease is : 1. 20% 2. 2.5% 3. 5% 4. 10%

 

 

 

 Question:  From NCERT  | NEET   || [Difficult level:Easy] Subtopic:Power || 

:If voltage across a bulb rated 220 V-100 W drops by 2.5% of its rated value, the percentage of the rated value by which the power would decrease is :

1. 20%

2. 2.5%

3. 5%

4. 10%

Answer: 3. 5%

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