Two long, straight, current-carrying wires lie in the plane of the computer scre
ID: 2199956 • Letter: T
Question
Two long, straight, current-carrying wires lie in the plane of the computer screen, one with a current flowing down and the other with a current flowing to the right. The magnitudes of the currents are equal. (The wires are insulated, so there is no current flowing from one wire to the other.)
What is the direction of the total magnetic field at the point marked X?
This point is equal distance below the horizontal wire and to the right of the vertical wire.
Right, the the plane of the screen.
Right and Up, in the plane of the screen.
Up, in the plane of the screen
Left and Up, in the plane of the screen
Left, in the plane of the screen
Left and Down, in the plane of the screen
Down, in the plane of the screen
Right and Down, in the plane of the screen
Into the plane of the screen
Out of the plane of the screen
Clockwise, in the plane of the screen
Counter Clockwise, in the plane of the screen
Zero. There is no direction because the quantity in the question has zero magnitude.
A)Right, the the plane of the screen.
B)Right and Up, in the plane of the screen.
C)Up, in the plane of the screen
D)Left and Up, in the plane of the screen
E)Left, in the plane of the screen
F)Left and Down, in the plane of the screen
G)Down, in the plane of the screen
H)Right and Down, in the plane of the screen
I)Into the plane of the screen
J)Out of the plane of the screen
K)Clockwise, in the plane of the screen
L)Counter Clockwise, in the plane of the screen
M)Zero. There is no direction because the quantity in the question has zero magnitude.
Explanation / Answer
M> 0 because think of independent effect of the wires, they produce equal magnitude fields in opposite directions..
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