What is the principle of electromagnetic induction?
A. A change in magnetic field induces an electric current in a conductor
B. A change in electric field induces an magnetic field
C. A change in electric current induces an magnetic field
D. A change in magnetic field induces an electric field
Answer:A
What is the principle of electromagnetic induction?
A. A change in magnetic field induces an electric current in a conductor B. A change in electric field induces an magnetic field C. A change in electric current induces an magnetic field D. A change in magnetic field induces an electric field