Carl and Abby are discussing what they have learned in class about electricity and magnetism. Carl tells Abby that an electric current running along a wire can be used to produce a magnetic force. Abby, on the other hand, tells Carl that moving electrons through a magnetic field can produce an electric current. Which of the students is/are correct? A. Only Abby is correct. B. Both Carl and Abby are correct. C. Neither student is correct. D. Only Carl is correct.
Both Carl and Abby are correct.
Option B
The electrons that move through a magnetic field are moving in a circular motion. This is because the electric field and magnetic fields are perpendicular to each other. And the electrons move maintaining the Fleming's Left Hand Rule. And by current, we actually mean moving electrons. So electrons moving in magnetic field can produce current. So Abby is correct.
According to Carl, the electric current moving through a wire can produce magnetic field. This is the magnetic effect of current. The magnetic field produced by the wire is perpendicular to the wire maintaining Fleming's Left Hand Rule and its strength depends on current strength and distance from wire. So both Carl and Abby are correct.