Electromagnetic Force
Like charges do this to one another.
What is repel one another?
A small "package" of light energy that acts like a particle.
What is a photon?
Electrically charged particles affecting other charged particles in the are surrounding them is called this.
What is electric field?
The name for how hard the battery "pushes" electrons through an electrical circuit.
There are two sides to a magnetic. These are called what?
What is the north and south pole?
The force between two charged objects is directly proportional to this.
What is the amount of charge on each object?
The amount of charge that travels past a fixed point in an electric circuit each second.
What is electric current?
A buildup of electrical charges within or on the surface of a material is called this.
What is static electricity?
In reality, current flows from the ______________ to the ____________ side of a battery in a circuit.
What is negative to the positive side?
True or False. Magnets can be monopoles.
What is false? Magnets always have a north and south pole, which makes them dipoles.
The force between two charged objects is inversely proportional to this.
What is the square of the distance between them? Ex. If you double the distance between two charged forces, the electric force between them is decreased by a factor of 4.
A material's ability to impede (stop or slow) the flow of charge.
What is resistance?
Charging an object by allowing it to come into contact with an object that already has an electrical charge.
What is charging by conduction?
In circuit drawings, correct is drawn flowing from the positive to the negative side, which is wrong. This is called ___________ ____________ .
What is conventional current?
True or False. Scientists are searching for a monopole.
True. If found, this would radically alter our understanding of magnetism, which is why some scientists look for it.
The electromagnetic force is produced through the exchange of these.
What are photons?
A circuit that does not have a complete connection between the two sides of the power source; as a result, current does not flow.
What is an open circuit?
What is charging by friction?
Draw 3 electronic circuit symbols on the board.
See p. 411 in text.
Materials such as iron, can be magnetized because they contain magnetic domains. These materials can become permanent magnets and are called _____________ materials.
What is ferromagnetic?
A Scottish physicist best known for his formulation of electromagnetism. He also published a book titled Treatise on Electricity and Magnetism.
Who is James Clerk Maxwell?
A cluster of many atoms that have their magnetic fields aligned and so act as a magnet.
What is a magnetic domain?
Charging an object without direct contact between the object and the charge.
A type of circuit for string lights where each light bulb has its own circuit to the power source. when one bulb burns out all tother bulbs will remain on since they have current flowing to them.
What is a parallel circuit? (vs. a series circuit)
Draw a diagram of the earth's magnetic field on the whiteboard. Include axis, magnetic field with direction and poles.
see p. 426