#emi

Stories and questions with this tag.

Tanvi Deshmukh12thSample· 10d ago
Flux = BA cosθ, but which angle is θ? And why is emf zero when flux is maximum?
ok so I made a really neat table in my notes for Faraday's law but the very first line is breaking my brain. NCERT defines flux as \Phi B = \mathbf{B}\cdot\mathbf{A} = BA\cos\theta . In the example I solved, a coil is pl
⚛️ NEET Physics❓ Question1 min read👏 5💬 7
Nisha Verma12thSample· 1mo ago
AC generator doubts: what changes if speed doubles, and where does the electrical energy actually come from?
Boards + NEET so I need this clean. NCERT gives e = NBA\omega\sin\omega t for a coil of N turns, area A, rotating at angular speed ω in a field B. I did a numerical: coil 50 turns, area 0.02 m², B = 0.4 T, rotating at 30
⚛️ NEET Physics❓ Question1 min read👏 6💬 7
Commons CommunityTeam· 1mo ago
I keep getting the direction wrong in electromagnetic induction. How do I use Lenz's law properly?
Magnitudes come out right but the direction of the induced current does not. A reliable method for Lenz's law and the other direction rules.
⚛️ NEET Physics❓ Question1 min read👏 0💬 4