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quietriot1006
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Homework Statement
A circular loop made from a flexible, conducting wire is shrinking. Its radius as a function of time is
Find an expression for the induced ε in the loop at time t.
Give your answer in terms of
Homework Equations
Magnetic Flux (Φm)=A*B
I(induced) = ε / R
ε =Absolute value of (dΦ/dt)
The Attempt at a Solution
At first get the magnetic flux using the Area * Magnetic field. Area is (pi)r^2 * B. I use this in faradays law with dt but i don't get the write expression. I end up getting
ε(t)=(B(pi)(r_0*e^(beta*t))^2)/t
I know I am differentiating somewhere wrong but i don't know where.
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