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JEE Main 2006 Physics question

PhysicsCurrent ElectricityJEE Main 2006

The resistance of a bulb filament is 100Ω at a temperature of C. If its temperature coefficient of resistance be 0.005 per °C, its resistance will become 200Ω at a temperature of

Answer: (3)

Solution

With (α defined with respect to 0°C): $ = = ⇒ 1 + 0.005t = 3 ⇒ t

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Question ID VK-038766