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

Thread starter ian 610
Start date Dec 3, 2010
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Coil Flux Magnetic 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.

Dec 3, 2010

ian 610

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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Dec 3, 2010

ehild

Science Advisor

Homework Helper

Try to read this page:

http://hyperphysics.phy-astr.gsu.edu/hbase/electric/farlaw.html

ehild

Dec 3, 2010

ian 610

thanks so much ehild.. helped me much.. ;p

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