Question
How does a bulb glow when the switch is turned
on?Solution
The bulb glows because the filaments get heated up due to current and lights up. • The bulb work on the principle that when a metal is heated it starts emitting light at some point.is turned on • When the switch is turned, an electric current is passed through • When an electric current is passed through a conductor it generates heat, H = IR2t (Joule's equation), where I is the current, R is the resistance of the conductor and t is the time for which current is passed. • This heat is used by the atomic electrons to get excited to higher energy levels from the ground state. • When these electrons return back to their ground state, a light photon is emitted, and this is how a bulb glows.
Who is elected as the chairman of the Indian Farmers Fertiliser Cooperative (IFFCO)?
What is the title and theme of the book co-authored by Lalu Prasad Yadav and Nalin Verma?Â
What is the name of authorised biography of Nelson Mandela?
Nippon Life India Asset Management Limited (NAM India) launched India’s First _______ sector ETF.
Who among the following people wrote a book named "Kitab al-Tafhim"?
Which village has been declared as India’ s first 24x7 solar- powered village?
Who appoints the Chief Election Commissioner?
Who authored the book titled "Introduction to Bitcoin"?
Who authored the book "Moving On - Moving Forward: A Year In Office"?
Which literary work titled "The Humble Administrator's Garden" is authored by?
Relevant for Exams:
