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What is a magnetic field?
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A magnetic field is a region around a magnetic material or moving electric charge within which the force of magnetism acts.
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How is a magnetic field represented visually?
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A magnetic field is represented by magnetic field lines that show the direction and strength of the magnetic force.
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What is the direction of magnetic field lines outside a magnet?
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Outside a magnet, the magnetic field lines emerge from the North pole and enter through the South pole.
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What instruments are used to detect magnetic fields?
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Instruments like compasses and magnetometers are used to detect magnetic fields.
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What is Earth's magnetic field?
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Earth's magnetic field is the magnetic field that extends from Earth's interior out into space, protecting the planet from the solar wind.
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What are some practical uses of magnetic fields?
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Magnetic fields are used in MRI machines, electric motors, generators, and data storage devices like hard drives.
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What is a magnetic domain?
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A magnetic domain is a region within a material where the magnetic moments are aligned in the same direction.
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How does temperature affect magnetic fields of materials?
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High temperatures can cause a material to lose its magnetic properties, known as reaching the Curie point.
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What is the right-hand rule in magnetism?
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The right-hand rule is a mnemonic for determining the direction of a magnetic force, current, or field in physics.
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What is magnetic flux?
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Magnetic flux refers to the total number of magnetic field lines passing through a given area.
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How do magnetic fields affect charged particles?
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Magnetic fields exert a force on moving charged particles, causing them to move in a curved path.
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What is the magnetic force on a current-carrying wire?
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The magnetic force on a wire is perpendicular to both the current and the magnetic field, determined by the right-hand rule.
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What is a solenoid and its application?
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A solenoid is a coil of wire that generates a magnetic field when an electric current passes through it, used in devices like electromagnets and valves.
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What happens when opposite poles of a magnet interact?
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When opposite poles (North and South) of magnets interact, they attract each other.
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What effect does the distance between two magnets have on the magnetic force?
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As the distance between two magnets increases, the magnetic force between them decreases.
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