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. .

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

Answer 1

a) true

2) false

3) true

4) false

5) true

6)true

Answer 2

A) true
b) true
c) true
d) true
e) true

f) false

Answer 3

ANSWER:

A) False, In this case, both wires produce a magnetic ?eld out of the page at q

and the force is downward.

B) True

C) True, parallel currents attract

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

Answer 4

1)false

2)true(everything in the question is due to ampere's right hand rule)(it will be downwards)

3)true

4)true

5)true

6)false

Answer 5