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

Question

In the picture below, 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 i1 = 0 and i2 is greater than zero, then the magnetic field near charge q points into the page.
True False  If i1 = 0 and i2 is greater than zero then the force on q is south.
True False  If i1 = 0 and i2 is greater than zero, then the force on q points out of the page.
True False  If i1 is greater than i2, then the force on q is north.
True False  If i1 = i2, then the wires are attracted to each other.
True False  If i2 = - i1 then the force on q equals zero.
True False  If v = 0, then the force on q is zero.

Explanation / Answer

(a) If i1 = 0 and i2 is greater than zero, then the magnetic field near charge q points into the page.FALSE

(b) If i1 = 0 and i2 is greater than zero then the force on q is south.TRUE

(c) If i1 = 0 and i2 is greater than zero, then the force on q points out of the page.FALSE

(d) If i1 is greater than i2, then the force on q is north. FALSE

(e) If i1 = i2, then the wires are attracted to each other. TRUE

(f) If i2 = - i1 then the force on q equals zero.FALSE

(g) If v = 0, then the force on q is zero.TRUE

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