Final Answer:
The direction of the magnetic field at point Z is 4)right.
Step-by-step explanation:
The 4)right-hand rule is used to determine the direction of the magnetic field around a current-carrying wire. According to this rule, if you point your thumb in the direction of the current, your index finger in the direction of the magnetic field, then your middle finger will point in the direction of the conventional current (positive charge) flow. In this case, if the wire is perpendicular to the screen and the current is pointing into the screen at point Z, the magnetic field at point Z will be directed to the right.
Understanding the relationship between current flow and magnetic fields is fundamental to electromagnetism. When current flows through a wire, it generates a magnetic field around it. The direction of this magnetic field can be determined using the right-hand rule, which is a crucial concept in physics.
This rule is applicable not only to wires but also to various situations involving current-carrying conductors, coils, and solenoids. It provides a systematic way to predict the direction of the magnetic field, contributing to the understanding and application of electromagnetic principles in various devices, including motors, transformers, and generators.