- #1
darksyesider
- 63
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I was reading this: http://web.mit.edu/8.02t/www/materials/StudyGuide/guide10.pdf
(specifically page 10-6), and came across the formula;
## \mathcal{E} = -Blv##
which is used for motional emf.
Next, I was trying to solve a problem on page 10-33 (bottom problem)
with a spinning bar. They broke up the bar into segments (dr) and used that formula and integrated to find the induced emf.
I don't get why you can use that formula though in this problem's case, because isn't it only for a bar moving across a circuit?
I guess I'm lacking in the theory; can someone explain why we can use it?
(specifically page 10-6), and came across the formula;
## \mathcal{E} = -Blv##
which is used for motional emf.
Next, I was trying to solve a problem on page 10-33 (bottom problem)
with a spinning bar. They broke up the bar into segments (dr) and used that formula and integrated to find the induced emf.
I don't get why you can use that formula though in this problem's case, because isn't it only for a bar moving across a circuit?
I guess I'm lacking in the theory; can someone explain why we can use it?