Final answer:
The Right-Hand Rule is used to determine the direction of a magnetic field around a current-carrying wire, where your thumb points in the direction of the current and your fingers indicate the direction of the magnetic field loops. The correct answer is option: The Right-Hand Rule
Step-by-step explanation:
The rule in Physics that can help you determine the direction of a magnetic field around a current-carrying wire is known as the Right-Hand Rule. This rule is especially relevant when you're analyzing scenarios involving current-carrying conductors and magnetism.
To apply the Right-Hand Rule 2 (RHR-2), you would point your thumb in the direction of the current and curl your fingers; the direction in which your fingers curl represents the direction of the magnetic field loops created by the current. For instance, if the current flows upwards along a wire, your curled fingers would wrap around the wire in a circular pattern, which corresponds to the magnetic field lines.
The magnetic field lines around a straight current-carrying wire are concentric circles, and the Right-Hand Rule helps to determine their direction. This rule is part of understanding how electric currents create magnetic fields, which is essential for various applications in engineering and technology.