Two long wires are parallel to each other. One wire carries a current directed due east and the other carries a current of the same magnitude, but directed due west. Which one of the following statements concerning this situation is false?

a) The magnetic field in the plane of the wires at the midpoint between the two wires is equal to zero tesla.
b) The magnetic forces due to the currents carried by the wires causes the wires to move apart.
c) If you are looking toward the west along the wire carrying the current toward the west, the magnetic field lines are directed clockwise around the wire
d) The magnetic field produced by each wire has its greatest magnitude outside, but near the surface of the wire.


Answer: a) The magnetic field in the plane of the wires at the midpoint between the two wires is equal to zero tesla.

Physics & Space Science

You might also like to view...

O2 is an example of

A) a molecule only B) a compound only C) both a molecule and a compound D) a collection of isolated atoms

Physics & Space Science

A charged particle (mass = 4.0 ?g, charge = 5.0 ?C) moves in a region where the only force on it is magnetic. What is the magnitude of the acceleration of the particle at a point where the speed of the particle is 5.0 km/s, the magnitude of the magnetic field is 8.0 mT, and the angle between the direction of the magnetic field and the velocity of the particle is 60°?

a. 39 km/s2 b. 43 km/s2 c. 48 km/s2 d. 52 km/s2 e. 25 km/s2

Physics & Space Science

Light travels at a speed of 300,000 km/s. About how far is a light-year?

A) 10 million meters B) 10 billion km C) 300,000 km D) 10 million km E) 10 trillion km

Physics & Space Science

If a Cu2+ ion drops through a potential difference of 12. V, it will acquire a kinetic energy (in the absence of friction) of

A) 12. eV. B) 6.0 eV. C) 24. eV. D) 12. J. E) 6.0 J.

Physics & Space Science