In the picture above, the two wires carry current i 1 and i 2 , respectively, wi

ID: 2264486 • Letter: I

Question

In the picture above, the two wires carry current i1 and i2, respectively, with positive current to the right. The charge q is positive and has velocity v to the right.

            (True/False) If i2 = - i1 then the force on q equals zero.
            (True/False) If i2 = 0 and i1 is greater than zero, then the force on q points into the page.
             (True/False) If i1 is greater than i2, then the force on q is north.
            (True/False) If i2 = 0 and i1 is greater than zero, then the force on q is north.
            (True/False) If v = 0, then the force on q is zero.
              (True/False) If i2 = 0 and i1 is greater than zero, then the magnetic field near charge q points out of the page.
            (True/False) If i1 = - i2, then the wires repel each other.

In the picture above, the two wires carry current i1 and i2, respectively, with positive current to the right. The charge q is positive and has velocity v to the right. (True/False) If i2 = - i1 then the force on q equals zero. (True/False) If i2 = 0 and i1 is greater than zero, then the force on q points into the page. (True/False) If i1 is greater than i2, then the force on q is north. (True/False) If i2 = 0 and i1 is greater than zero, then the force on q is north. (True/False) If v = 0, then the force on q is zero. (True/False) If i2 = 0 and i1 is greater than zero, then the magnetic field near charge q points out of the page. (True/False) If i1 = - i2, then the wires repel each other.

Explanation / Answer

(False) If i2 = - i1 then the force on q equals zero.
(False) If i2 = 0 and i1 is greater than zero, then the force on q points into the page.
(True) If i1 is greater than i2, then the force on q is north.
(True) If i2 = 0 and i1 is greater than zero, then the force on q is north.
(True) If v = 0, then the force on q is zero.
(false) If i2 = 0 and i1 is greater than zero, then the magnetic field near charge q points out of the page.
(True) If i1 = - i2, then the wires repel each other.

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In the picture above, the two wires carry current i 1 and i 2 , respectively, wi

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