A coil of wire containing N turns is in an external magnetic field that is perpendicular to the plane of the coil and it steadily changing. Under these circumstances, an emf is induced in the coil.
If the rate of change of the magnetic field and the number of turns in the coil are now doubled (but nothing else changes), what will be the induced emf in the coil? A) 2
B) /2
C) 4
D) /4
E)
Question 2
When a ferromagnetic material is placed in an external magnetic field, the net magnetic field of its magnetic domains becomes
A) smaller.
B) zero.
C) larger.
An example of external fertilization.
external combustion engine
External Ear
The arrangement of the external eye muscles: (A) lateral and (B) anterior views.
External and cross-sectional view of an infarct caused by a myocardial infarction.
External intercostals