A light bulb, rated 12V drew 0.5A when it reached a temperature of 40 degrees Celsius. It was switched on at a temperature of 25 degree Celsius. What was the current drawn by the lamp at the moment of switching? (Consider the filament as Tungsten with a temp. coefficient of 0.0051 @ 25 degree Celsius). The total length of the filament is 1.5 inches and cross-sectional area is 100 CM.

A light bulb, rated 12V drew 0.5A when it reached a temperature of 40 degrees Celsius. It was switched on at a temperature of 25 degree Celsius. What was the current drawn by the lamp at the moment of switching? (Consider the filament as Tungsten with a temp. coefficient of 0.0051 @ 25 degree Celsius). The total length of the filament is 1.5 inches and cross-sectional area is 100 CM.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

Find the distance covered Time=2.5 hr Speed=34 km/hr
Needs Complete typed solution with 100 % accuracy.
Adding vectors.
Find distance speed=11.21 km/hr Time=1 hr
Compute the route of a snail taking 1.9 m displacement at 18 degrees south east
During an enrollment process, an MS student wandered inside the school campus. From the gate, he walked 150 m northward towards the office of the department. From there, he proceeds to the admission office 300 m, 5.00" south of east. He then moved 200 m, at 165 to the cashier to pay for his tuition. Lastly, he went to the Registrar's Office walking 125 m directed at 50' west of north. What is the magnitude and direction of the student's displacement from the school gate?
(a) What is the capacitance of an empty parallel-plate capacitor with metal plates that each have an area of 1.00 m2 , separated by 1.00 mm? (b) How much charge is stored in this capacitor if a voltage of 3.00 × 103 V is applied to it?
Determine the distance between the two cities. km Determine the average speed for the trip. km/hr
Given the illustration below, a ball is thrown at A with Vo= 125 ft/s and e=0.90 at A. Compute the distance d in meters. B 3 ft 60°
Find the dimensions of the quantity in the equation, An 2nV 2m(Uo - En) O L O T O L·T O L·M/ T2 O M O L/T2