The production of electric current across a conductor moving through a magnetic field is called ___.

• A. Direct Current (DC)
• B. Electrical Resistance
• C. Electromagnetic Induction
• D. Capacitive Effect

Answer: (C)

The production of electric current across a conductor moving through a magnetic field is electromagnetic induction—the generation of an electromotive force when a conductor experiences a magnetic environment or motion in a magnetic field. In this motional case, charges inside the conductor feel a magnetic force q(v × B) as the rod moves, pushing charges to one end and creating a voltage. If the circuit closes, current flows. For a straight conductor moving perpendicular to the field, the induced emf is roughly ε = B L v, and this process is described by Faraday’s law (with Lenz’s law accounting for the direction).

Direct Current isn’t about creating motion-induced current; it’s a type of current direction. Electrical resistance is what opposes current flow, not how it’s generated. Capacitive effect relates to storing energy in a capacitor, not the induction of emf by motion.