Q51.A 220 volt, 1000 watt bulb is connected across a 110 volt mains supply. The power consumed will be (1) 750watt (2) 500watt (3) 250watt (4) 1000watt
What This Question Tests
This question tests the understanding of power rating of an electrical appliance, calculating its resistance, and then determining the power consumed when operated at a different voltage.
Concepts Tested
Formulas Used
P = V²/R
R = V_rated²/P_rated
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📋 Question Details
- Chapter
- Current Electricity
- Topic
- Electric Power, Resistance
- Year
- 2003
- Shift
- Unknown
- Q Number
- Q51
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 3: Current Electricity
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