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QAIPM-2012-Ph-1760: NEET 2012 Physics - Class 12 AIPM-2012-Ph-1760 Solution: If voltage across a bulb rated 220 volt-100 watt drops by 2.5%…
If voltage across a bulb rated 220 volt-100 watt drops by 2.5% of its rated value the percentage of the rated value by which the power would decrease is 20% 2.5% 5% 10%
Multiple Choice Options
- A will become rigif showing no movement
- B will stay in any position
- C will stay in north-south direction only
- D will stay in east-west direction only
Step-by-Step Verified Solution
A compass needle which is allowed to move in a horizontal plane is taken to a geomagnetic pole. It will stay in any position as the horizontal component of earth�s magnetic field becomes zero at the geomagnetic pole.