Select all of the following descriptions that match what happens when a ferromagnetic material is placed in an external magnetic field.
a. The ferromagnetic material rapidly cools.
b. The ferromagnetic material becomes negatively charged.
c. The ferromagnetic material becomes positively charged.
d. The external magnetic field induces magnetic poles in the ferromagnetic material.
e. The ferromagnetic material becomes magnetized.
f. Nothing, ferromagnetic materials do not interact with magnetic fields.
Answer: d. The external magnetic field induces magnetic poles in the ferromagnetic material.
e. The ferromagnetic material becomes magnetized.
You might also like to view...
Two very long parallel wires in the xy-plane, a distance 2a apart, are parallel to the y-axis and carry equal currents I as shown in the figure
The +z direction points perpendicular to the xy-plane in a right-handed coordinate system. If both currents flow in the +y direction, which one of the graphs shown in the figure below best represents the z component of the net magnetic field, in the xy-plane, as a function of x? (Caution: These graphs are not magnetic field lines.) A) 1 B) 2 C) 3 D) 4 E) 5
Parallel-Plate Capacitor: Which of the following will increase the capacitance of a parallel-plate capacitor? (There could be more than one correct choice.)
A. a decrease in the plate area and an increase in the plate separation B. a decrease in the potential difference between the plates C. an increase in the potential difference between the plates D. an increase in the plate area and a decrease in the plate separation E. an increase in the charge on the plates
Electroweak theory results in models for combining the electromagnetic, weak and strong nuclear interactions into a single basic force
a. True b. False Indicate whether the statement is true or false
What process has played the greatest role in determining the arrangement of the continents on Earth?
A) impact cratering B) volcanism C) plate tectonics D) erosion E) acid rain