Question

theresa has a magnet and two coils of tightly bound copper wire. magnet wire coils how could theresa cause an electric current to flow through one of the copper wires? ○ a. disconnect the coils and place them side by side ○ b. move the magnet up and down near one of the coils. ○ c. carefully touch the magnet to one of the coils. ○ d. remove a length of wire from one of the coils.

Explanation:

According to Faraday's law of electromagnetic induction, a changing magnetic flux through a coil induces an electromotive force (emf) and thus an electric current. Moving the magnet up and down near one of the coils (Option B) changes the magnetic flux through the coil. Disconnecting the coils and placing them side - by - side (Option A) does not change the magnetic flux. Touching the magnet to the coil (Option C) does not create a changing magnetic flux. Removing a length of wire (Option D) affects the resistance but not the induction of current by itself.

Answer:

B. Move the magnet up and down near one of the coils.