Electromagnetism
Electromagnetism is ____ produced by an electric current.
What is Magnetism?
How many poles do magnets have?
What is 2, North and South?
The positively charged particle.
What is proton?
Define Attraction
What is a force that pulls two objects or particles together?
What is the charge on a balloon
What is negative?
When electric current flows through a wire, it creates a magnetic field that surrounds the wire in ___.
What are circles?
When two magnets are brought together, what happens to their magnetic fields?
What is they interact?
Examples: The lines of force of north and south poles attract each other whereas those of two north poles repel each other.
When the number of electrons and the number of protons are equal, the object is
What is neutral?
Define Repulsion
Rubber is an example of this.
What is insulator?
Electrons flow in this direction compared to an electric current.
What is the opposite direction?
Magnetic force is exerted over a distance and includes these forces.
What is Attraction and Repulsion?
The SI unit of charge for the coulomb.
What is C
6.25x10^18 electrons.
The attractive or repulsive interaction between two charged objects or bodies.
What is electric charge?
What direction does a compass always point?
What is North?
When determining the electron flow, we grasp a section of wire with our right hand pointing the thumb in the direction of the current flow and our fingers will curl around the wire in the direction of the magnetic field.
What is the Right Hand Rule?
A magnet can exert force over a distance because the magnet is surrounded by this.
What is a magnetic field?
A buildup of electric charges on objects
What is static Electricity?
The physical property of matter that causes it to experience a force when placed in an electromagnetic field. Can be positive, negative, or neutral.
What is Electric Charge?
What is the formula for Coulomb's Law?
What is
Fe= Kq1q2/d^2
What are the two advantages of electromagnets?
What is:
1. They have extremely strong magnetic fields.
2. The magnetic field can be turned on and off.
What happens to the magnetic force as an object moves away from the magnet?
What is it decreases or weakens?
Give an explanation for static discharge.
What is a sudden flow of electrons from one charged object to another?
Example: What happens when you have become negatively charged and your hand approaches the metal doorknocker? Your negatively charged hand repels electrons in the metal, so the electrons move to the other side of the knocker. This makes the side of the knocker closest to your hand positively charged. As your negatively charged hand gets very close to the positively charged side of the metal, the air between your hand and the knocker also becomes electrically charged.
A piece of iron (or an ore, alloy, or other material) that has its component atoms so ordered that the material exhibits properties of magnetism, such as attracting other iron-containing objects or aligning itself in an external magnetic field.
What is a magnet?
Charging an object by touching it with another charged object is called charging by
What is conduction?