The long, straight current-carrying wire of (Figure 1) lies in the plane of the
ID: 1374114 • Letter: T
Question
The long, straight current-carrying wire of (Figure 1) lies in the plane of the screen, and the magnetic field it produces at position P points out of the screen.
1) In which direction does the magnetic field point at position S?
A. Downward
B. Out of the screen.
C. Toward the left.
D. Toward the right.
E. Upward.
F. Into the screen.
G. There is not enough information
The long, straight current-carrying wire of (Figure 1) lies in the plane of the screen, and the magnetic field it produces at position P points out of the screen. 1) In which direction does the magnetic field point at position S? A. Downward B. Out of the screen. C. Toward the left. D. Toward the right. E. Upward. F. Into the screen. G. There is not enough informationExplanation / Answer
Answer (F) Into the screen
If you will point your thumb in the direction of the current, the curl of rest of the finger indicates the direction of magnetic field.
In the case above, the direcion of magnetic field at a point P is given to be Out of the Screen. Direction of B field at point S will be just opposite to that of P, so its into the screen.
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