In the picture below, the two wires carry current i_1 and i_2, respectively, wit

Question

In the picture below, the two wires carry current i_1 and i_2, respectively, with positive current to the right. The charge q is positive and has velocity v to the right. If i_2 = -i_1 then the force on q equals zero. If i_1 is less than i_2, then the force on q is south. i_2 = 0 and i_1 is greater than zero, then the force on q is north. If i_1 = i_2 then the wires are attracted to each other. If i_2 = 0 and i_1 is greater than zero, then the magnetic field near charge q points out of the page. If i_2 = 0 and i_1 is greater than zero, then the force on q points into the page. If v = 0, then the force on q is zero.

Explanation / Answer

A)False

Because, the wires will produce a B field out of the page at q and the force on q will act downwards

B)True

The bottom wire will produceB field pointing out of the page at q and hence F will be directed south.

C)True

The B field will be in to the page and force will be along North.

D)True

Parallel currents in same direction always attracts(no matter if current is equal ot not equal)

E)False

B field points into the page

F)False

B field points into the page and force will point into North.

G)True

magnetic force is due to motion of charged particle.

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