Question

Which of the following is NOT true of electromagnetic waves? A. An electric field is created in any region of space in which a magnetic field is changing with time. B. A magnetic field is created in any region of space in which an electric field is changing with time. C. Induction of electric fields by changing magnetic fields occurs only if a conducting material is present. D. Induction of magnetic fields by changing magnetic fields occurs even in the absence of a conducting material. Reset Selection

Answer 1

The incorrect statement about electromagnetic waves is C. induction of electric fields by changing magnetic fields only occurs if a conducting material is present.
Electromagnetic waves do not rely on any medium for propagation, which means that the generation of fields is irrespective of the presence of a conducting material. 

Answer 2

. C. Induction of electric fields by changing magnetic fields occurs only if a conducting material is present.  is correct