College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A high-voltage power line carries a current of 116 A at a location where the Earth's magnetic field has a magnitude of 0.59 G and points to the north, 66 degrees below the horizontal.

Part A

Find the direction of the magnetic force exerted on a 270 m length of wire if the current in the wire flows horizontally toward the east.

force points toward north, 66 ∘∘ above the horizontal
force points toward north, 24 ∘∘ above the horizontal
force points toward south, 24 ∘∘ below the horizontal
force points toward south, 24 ∘∘ above the horizontal

Part B

Find the magnitude of the magnetic force exerted on a 270 mm length of wire if the current in the wire flows horizontally toward the east.
Express your answer using two significant figures.
 

Part C

Find the direction of the magnetic force exerted on a 270 mm length of wire if the current in the wire flows horizontally toward the south.
Find the direction of the magnetic force exerted on a 270  length of wire if the current in the wire flows horizontally toward the south.
force points toward the north
force points toward the south
force points toward the west
force points toward the east

Part D

Find the magnitude of the magnetic force exerted on a 270 mm length of wire if the current in the wire flows horizontally toward the south.
Express your answer using two significant figures.
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