Electric Charge & Static Electricity
What are the two types of electric charge?
Positive and negative
What is needed for a circuit to work?
A closed circuit.
What are the two poles of a magnet?
North and South
What is an electromagnet?
A magnet made by running current through a coil of wire
What is the correct and complete way of spelling your physics teacher's name?
Giuliana
What happens when two negatively charged objects are brought close together?
They will repel
In a circuit, electrons move from which side of a battery?
The negative side
What would happen if two north poles are brought together?
They repel
How can you make an electromagnet stronger?
Increase current and/or add more coils
Ms. Giuli graduated with a degree in what field?
Environmental Science and Sustainability.
An object becomes positively charged when it does what?
Loses electrons
In a circuit, a lightbulb does not turn on but the battery works, what is the most likely problem?
The circuit is open
Where is the magnetic field strongest on a magnet?
At the poles
What do AC and DC stand for?
Alternating Current and Direct Current
2004
Explain why a balloon sticks to a wall after being rubbed on hair.
Electrons transfer to the balloon, giving it a negative charge. The wall becomes polarized, causing attraction.
What is the difference between voltage and current?
Voltage is the push (energy per charge), current is the flow of electrons
Where does the term magnetism come from?
The term is derived from Magnesia, the name of a region in Asia Minor where lodestone, a naturally magnetic iron ore was found.
What is the main difference between a generator and an electric motor?
A generator converts mechanical energy into electrical energy, while an electric motor converts electrical energy into mechanical energy.
What are two of Ms. Giuli's favorite hobbies?
Reading and playing video games
Two neutral objects are rubbed together. Afterward, one is positive and one is negative. Explain what happened to the electrons and why charge is conserved.
Electrons transferred from one object to the other. One lost electrons (positive), the other gained electrons (negative). Total charge remains balanced because electrons are transferred, not created or destroyed.
If resistance increases but voltage stays the same, what happens to current?
Current decreases based on Ohm’s Law: I = V/R
What do we call materials that respond strongly to a magnetic field?
Ferromagnetic
What does a transformer do?
A device that increases or decreases the voltage of an AC current.
In what year did Ms. Giuli graduate highschool?
2022