3. What conclusion did Ampere reach from his experiments? Currents can exert electrical 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 that Ampere reached from his experiments. Ampere, a French physicist and mathematician, is known for his work on the theory of electromagnetism. He conducted experiments that led to the discovery of the relationship between electricity and magnetism, which is now known as Ampere's law. The options provided are:<br /><br />1. Currents can exert electrical effects around them.<br />2. An electric current is capable of generating magnetic effects on compasses.<br />3. A solenoid is capable of transmitting electrical energy when stimulated with a magnet.<br />4. Electric currents exert magnetic attraction or repulsion effects around them.<br /><br />Option 1 is incorrect because it is a vague statement and does not specifically relate to Ampere's experiments or discoveries.<br /><br />Option 2 is partially correct as Ampere did discover that electric currents can affect compasses, but it is not the most comprehensive answer to the question.<br /><br />Option 3 is incorrect because it describes a solenoid's ability to transmit electrical energy, which is not directly related to Ampere's experiments or discoveries.<br /><br />Option 4 is the correct answer. Ampere's experiments led to the conclusion that electric currents exert magnetic effects around them, which is a fundamental principle of electromagnetism. This is the basis of Ampere's law, which states that the integral of the magnetic field around a closed loop is proportional to the electric current passing through the loop. This law is fundamental to the understanding of electromagnetism and has numerous applications in various fields of science and engineering.