- #1
Eats Dirt
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For amperes law it is stated that:
∫Bdl=μIenc
My confusion is that B is that for example here now on Earth if I have a compass. It interacts with a the magnetic field of the Earth and points north. There is no I-enclosed yet there is still a magnetic field?
Also another Amperes Law question involving a toroid:
Outside of a toroid it is stated that the magnetic field is 0 because Ienc is 0. Can you not enclose current if your amperian path is larger than the toroid itself?
∫Bdl=μIenc
My confusion is that B is that for example here now on Earth if I have a compass. It interacts with a the magnetic field of the Earth and points north. There is no I-enclosed yet there is still a magnetic field?
Also another Amperes Law question involving a toroid:
Outside of a toroid it is stated that the magnetic field is 0 because Ienc is 0. Can you not enclose current if your amperian path is larger than the toroid itself?