Q33.An electric bulb is rated 220 volt −100 watt. The power consumed by it when operated on 110 volt will be (1) 50 watt (2) 75 watt (3) 40 watt (4) 25 watt
What This Question Tests
This question requires calculating the bulb's resistance from its rated specifications and then determining the power consumed at a different operating voltage.
Concepts Tested
Formulas Used
R = V_rated²/P_rated
P = V²/R
📚 NCERT Sections This Tests
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📋 Question Details
- Chapter
- Current Electricity
- Topic
- Power in electrical circuits
- Year
- 2006
- Shift
- Unknown
- Q Number
- Q33
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 3: Current Electricity
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