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23 Nov 2019
A high-voltage power line carries a current of110 A at a locationwhere the Earth's magnetic field has amagnitude of 0.39Gauss(0.39·10-4 T) and pointsdue north parallel to theground. Find the direction and magnitudeof the magnetic forceexerted on a 290 m length of the power line if the current intheline flows in the following directions:
*i solved (a) & (b)already...* (a) horizontally toward the east:1.24 N, upwards (b) horizontally toward thenorth: 0 N
*this is where I needhelp:* (c) How far away do you have to get fromthis power line,before the B field from the power line itself isabout as small asthe Earth's? -->Ecuador, Australia, United States?
(d) This power line is most likely inwhich of these threecountries: --> Ecuador,Australia, United States?
(e) If the Earth's Bfield had instead pointed at an anglebelow horizontal, then youwould have said (out of thesechoices): --> Ecuador,Australia, United States?
Thank you very much for yourhelp! I always give maximumpoints!! =)
A high-voltage power line carries a current of110 A at a locationwhere the Earth's magnetic field has amagnitude of 0.39Gauss(0.39·10-4 T) and pointsdue north parallel to theground. Find the direction and magnitudeof the magnetic forceexerted on a 290 m length of the power line if the current intheline flows in the following directions:
*i solved (a) & (b)already...*
(a) horizontally toward the east:1.24 N, upwards
(b) horizontally toward thenorth: 0 N
*this is where I needhelp:*
(c) How far away do you have to get fromthis power line,before the B field from the power line itself isabout as small asthe Earth's?
-->Ecuador, Australia, United States?
(d) This power line is most likely inwhich of these threecountries:
--> Ecuador,Australia, United States?
(e) If the Earth's Bfield had instead pointed at an anglebelow horizontal, then youwould have said (out of thesechoices):
--> Ecuador,Australia, United States?
Thank you very much for yourhelp! I always give maximumpoints!! =)
