Why tungsten is used as filament

Create Account. Already Have an Account? Why is tungsten used as a filament in electric bulbs? It has a high melting point. Answer to Question.

Chetan Rian Jul 05, The answer is It has a high melting point. Upvote The internal resistance of an ammeter should be. Negative, positive II. Negative, Negative III. Positive, Positive. Suggested Test Series. Suggested Exams. More Physics Questions Q1. X-rays were discovered by:. When a body is immersed in a liquid the upward force experienced by it is known as :.

Which among the following is a non-conservative force? On which of the following scientific principles is an electric generator based? The Irish chemist Peter Woulfe examined it in and realised that it did contain a new metal, but got no further. In , the Swedish chemist Wilhelm Scheele succeeded in isolating an acidic white oxide from the ore.

Fausto wanted to call the new element volfram, which is still its name in Sweden, while Juan preferred tungsten, which became the name preferred name in England and France. In Germany, Spain and Italy it is called wolfram.

Tungsten is generally obtained as a dull grey powder, which is difficult to melt. As the pure metal it is easily worked, can be cut with a hacksaw and is very ductile a gram of the metal can be drawn into a wire m long. Tungsten has played a key role in weaponry. By the end of the first world war, demand had soared to 35 tonnes a year.

More recently, tungsten is being used in place of lead in bullets - the US Army have an oddly named 'Green Ammunition Program'. Soon it found use in machine tools, allowing metal cutters to work much faster and last longer. Tungsten is used for electric contacts, arc-welding electrodes and for heating elements in high temperature furnaces.

However, so-called cemented carbide tools are taking their place. Ask Your Doubts We are really eager to clarify your doubts.

Join Now. Company About Us. Our Team. Our Faculty. Behind the Scene. Tutorix for Schools.