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Homework Statement
You hold a wire coil perpendicular to a magnetic field B. If the magnitude of B increases while its direction remains unchanged, how will the magnetic flux through the coil change?
Check all that apply:
The flux is unchanged because the position of the coil with respect to B is unchanged.
The flux increases because the magnitude of B increases.
The flux decreases because the magnitude of B increases.
The flux is unchanged because the surface area of the coil is unchanged.
Homework Equations
[tex]A_{eff} = Acos\vartheta[/tex]
The Attempt at a Solution
According to the formula - [tex]A_{eff} = Acos\vartheta[/tex], the magnetic flux is determined by the area. I believe the answer is "flux is unchanged because the surface area of the coil is unchanged" since in the problem, only B is changing.
Am I right?