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## Homework Statement

Uploaded the question below , Part B

## Homework Equations

Φ=NBA

EMF= (delta)Φ/(delta)t

V=IR

## The Attempt at a Solution

so i found the area (0.25x0.3) and then divided by two (=0.0375m^2) , then found Φ=80x1.4x0.0375=4.2wb

However , in the marking scheme they multiplayed by the speed instead of area !!