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Explain the behavior between like poles and opposite poles of magnets.
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Like poles repel each other, and opposite poles attract.
What causes the magnetic fields in both bar magnets and electromagnets?
The magnetic fields are due to electron movement.
How are magnetic fields around a bar magnet visually represented?
They are represented as a 'doughnut shape' with layers of nested loops.
How are magnetic fields influenced by electric currents?
Electric currents produce magnetic fields.
How are magnetic field lines represented?
Magnetic field lines show the direction of force on a North Pole.
What does an 'X' indicate in magnetic field direction notation?
An 'X' indicates a field directing into the page.
Explain where magnetic field lines originate and where they return to.
Magnetic field lines originate from the North Pole and return to the South Pole.
How does coiling a wire impact the intensity of the magnetic field?
Coiling a wire intensifies the magnetic field.
What rule can be used to predict the direction of the magnetic field around a current-carrying wire?
The right-hand rule.
When a bar magnet is broken in two, what happens to the resulting magnets?
Each resulting magnet will have a North and South pole.
Explain the use of the right-hand rule in determining magnetic field direction.
Thumb aligned with current direction; curled fingers indicate the magnetic field direction.
What does a dot ('•') signify in field notation?
A dot signifies a field coming out of the page.
What convention is commonly used to mark magnetic field lines?
They are conventionally marked using 'B' for magnetic field lines.
What are the two poles that all bar magnets have?
North and South poles
Describe the nature of magnetic forces and how they act.
Magnetic forces act at a distance, indicating they are field forces.
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