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. (It is midway between the two wires, as shown) ("North" is up the page, "East" is right, and so on.)

For the statements below, select T-True, F-False. If the first is T and the rest F, enter TFFFF.

A) If i1 = i2, then the wires are attracted to each other.
B) If v = 0, then the force on q is zero.
C) If i1 = 0 and i2 is greater than zero, then the magnetic field near charge q points out of the page.
D) If i1 is less than i2, then the force on q is south.
E) If i1 = - i2, then the force on q is zero.
F) If i1 = 0 and i2 is greater than zero, then the force on q is south.

Explanation / Answer

(A) True

(B) F = q v B = 0 , True

(C) True

(d) i1 < i2 then magnetic field is out of page

F = q (v X B) = q ( i x k) = (-j)

True

(e) if i1 = -i2 then magnitude and direction both will be same.

tthere will force on charge.

False

(f) True

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