18. If B, B, and B, are the magnetic field due to 11 and is then in Ampere's circuital law$8-d1 = ul. B isOLOL(1) B = B. -B,(2) B = B, +By+B(3) B=B-B,+B(4) B=B

18. If B, B, and B, are the magnetic field due to 11 and is then in

1.	18. If B, B, and B, are the magnetic field due to 11 and is then in Ampere's circuital law$8-d1 = ul. B isOLOL(1) B = B. -B,(2) B = B, +By+B(3) B=B-B,+B(4) B=B
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