3. What conclusion did Ampere reach from his experiments? Currents can exert electrica effects around them. An electric current is capable of generating magnetic effects on compasses. A solenoid is capable of transmitting electrical energy when stimulated with a magnet. Electric currents exert magnetic attraction or repulsion effects around them.

This question is asking about the conclusions drawn by André-Marie Ampère from his experiments. Ampère was a French mathematician and physicist who was one of the founders of the science of classical electromagnetism, also known as electrodynamics. He is most famous for establishing the theory of electromagnetism, which is the foundation of modern electrical engineering. The options provided are all related to the effects of electric currents, but the correct answer is the one that best represents Ampère's conclusions from his experiments.