Question Details SerCP8 19 P18 At a certain location, Earth has a magnetic field

Question

Question Details SerCP8 19 P18 At a certain location, Earth has a magnetic field of 0.60 x 104 T, pointing 75® below the horizontal in a north-south plane. A 10.4 m long straight wire carries a 12 A current. (a) If the current is directed horizontally toward the east, what are the magnitude and direction of the magnetic force on the wire? Magnitude Direction Select (b) What are the magnitude and direction of the force if the current is directed vertically upwardi Magnitude Direction ?-Select Need Help? Read nTak to Tuter

Explanation / Answer

a)

Magnetic force is given by

F=BILsin(o) =(0.6*10-4)*(12)*(10.4)*Sin90

F=7.488*10-3 N

Direction is 15o above the horizontal in the northward direction

b)

F=(0.6*10-4)*(12)*(10.4)*Sin(90+75)

F=1.938*10-3 N

Direction is west

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