0

Guest

Courses New

Electric bulb principle

Electric bulb
principle

Grade:12

2 Answers

gdbusher
100 Points
8 years ago
 the resistance of the filament in the bulb is high, the quantity of heat produced is also high. Therefore, the filament is heated to incandescence and emits light. Tungsten with a high melting point (3380oC) is used as the filament. The filament is usually enclosed in a glass bulb containing some inert gas at low pressure. Electric arc and electric welding also work on the principle of heating effect of current. In some cases such as transformers and dynamos, Joule heating effect is undesirable. These devices are designed in such a way as to reduce the loss of energy due to heating.
Anish
13 Points
6 years ago
Every appliances are based on OHMS Law.where potential difference is directly proportional to the current flowing through a conductor. Bulb is based on heating principle is wrong.

Think You Can Provide A Better Answer ?

Other Related Questions on Electric Current

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More