What is the EMF of a coil with a changing magnetic flux?

AI Thread Summary
To find the electromotive force (emf) of a coil with 50 turns as the magnetic flux decreases from 0.5 weber to 0 weber in 0.2 seconds, Faraday's law of electromagnetic induction can be applied. The emf can be calculated using the formula emf = -N (ΔΦ/Δt), where N is the number of turns, ΔΦ is the change in magnetic flux, and Δt is the time interval. In this case, the change in magnetic flux is -0.5 weber, and the time interval is 0.2 seconds. The discussion highlights the initial confusion about solving the problem, but assistance was provided, leading to a clearer understanding. The importance of applying the correct formula for calculating emf in relation to changing magnetic flux is emphasized.
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Homework Statement



what is the emf if the magnetic flux through a coil at 50 turns is reduced from 0.5 weber to 0 weber in 0.2 seconds?

Homework Equations





3. The Attempt at a Solution :

dont even know how to get started with this problem
 
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thanks so much ehild.. helped me much.. ;p
 

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