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.

Answer 1

1)False

2)True

3)true

4)True, The top wire produces a magnetic ?eld into the page at q. The bottom
wire produces a magnetic ?eld pointing out of the page at q. If the top current
is stronger, the force will be north (from qv

Answer 2

(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