Physics: Induced EMF question
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Physics: Induced EMF question

[From: ] [author: ] [Date: 11-10-04] [Hit: ]
could anyone show me how to work out this problem?-Using Faradays Law .. E = (-) n.∆(A/t) ........
A square loop of conducting wire is moved with a constant velocity v from a region of zero magnetic field into a region of uniform magnetic field and then out again into a field-free region. If the area of the loop is 1.6 x 10^-3 m^2 and v=2.5m.s^-1, calculate the magnitude of the magnetic field that could induce an EMF of 5.0mV in the loop during its motion.
could anyone show me how to work out this problem?

-
Using Faraday's Law .. E = (-) n.∆(BA/t)

n = 1
∆(A/t) .. length of a side of the square loop, L = √1.60^-3 m = 0.04 m
∆(A/t) = L(m) x v(m/s) = m²/s .. .. 0.04m x 2.50m/s = 0.10 m²/s

E = (-) B.∆(A/t) ..

5.0^-3 V = B x 0.10 m²/s .. .. B = 5.0^-3 / 0.1 .. .. .. ►B = 5.0^-2 T
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