r/Physics 2d ago

Image Lenz's law

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The loop is placed in a uniform magnetic field pointing into the page, and the field is increasing over time. Which way would the induced current flow?(The answer should be in the direction I showed in the image). What confuses me is, a smaller loop creates a stronger magnetic field per amp, so why does the current flow along the outer circumference to oppose the change, while the inner circumference ends up reinforcing the increasing field instead of opposing it?

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u/Appropriate_View8753 2d ago

That's a curved bar, not a loop.