Why is a long and thin tungsten filament used in a bulb explain it in 3to 4 lines
Answers
Answered by
0
Answer:
this may help you
Explanation:
Tungsten is very ductile amd can be made into very thin wires. Also it has high tensile strength and can manage high temperature. It glows when a lot of heat is passed through it.
Answered by
0
Answer:
long and thin tungsten is used as
R=(rho)l/a so here for a bulb resistance must be maximum
Explanation:
1)resistance is directly proportional to the length so length is increased
2)resistance is inversely proportional to its area so thin
3)tungsten have a high resistivity
Similar questions