The resistance of a bulb filament is 100 at a temperature of 100 "C . If its temperature…
Physics · NEET · NTA Exams — Current Electricity
The resistance of a bulb filament is 100 Ω at a temperature of 100\(\text { "C }\). If its temperature coefficient of resistance be 0.005 per \(\text { "C }\), then its resistance will become 200 Ω at a temperature
- 300\(\text { "C }\)
- 400\(\text { "C }\)
- 250\(\text { "C }\)
- 200\(\text { "C }\)
Answer
(B) 400 "C
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- The water in an electric kettle begins to boil in 15 minutes after being switched on. If the water is…
- Two electric bulbs marked 25W — 220 V and 100 W — 220 V are connected in series to a 440 V supply. Which of…
- Flash light equipped with a new set of batteries, produces bright white light. As the batteries wear out…
- An electric current is passed through a circuit containing two wires of the same material connected in…
- I -V characteristic of a copper wire of length L and area of cross-section A is shown in figure. The slope of…
- A potentiometer is an accurate and versatile device to make electrical measurements of E.M.F, because the…
- A copper wire of length 10 m and radius ( 10^ -2 ) m has electrical resistance of 10 . The current density in…
- Two 220 V, 100 W bulbs are connected first in series and then in parallel. Each time the combination is…
More Current Electricity questions · Browse all practice questions