Question

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 is greater than i₂, then the force on q is north.
True False  If v = 0, then the force on q is zero.
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 = 0 and i₂ is greater than zero then the force on q is south.
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 are attracted to each other.

Incorrect.

Tries 4/20

Previous Tries

Answer 1

If i₁ is greater than i₂, then the force on q is north.

True - If i1 is greater means magnetic field at the location of charge will be into the page, so as per right hand rule, force will be to the north

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If v = 0, then the force on q is zero.

True

F = qvB , if v = 0, F= 0 no matter what B is

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If i₂ = - i₁ then the force on q equals zero.

False

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If i₂ = 0 and i₁ is greater than zero, then the force on q points into the page.

False- force should be due north

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

True

due to i2, the field will be out of page and as per right hand rule, force will be due south

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If i₂ = 0 and i₁ is greater than zero, then the magnetic field near charge q points out of the page

False - field is into the page

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If i₁ = i₂, then the wires are attracted to each other.

True, wires carrying current in same direction attract