Electricity and magnetism

what’s a proton’s charge?

+1

whats a proton’s mass?

1 amu

Where are protons located?

Nucleus

whats a protons job

it determines what element an atom will be

Whats a neutrons charge

0

whats a neutrons mass

1 amu

whats the neutrons location

nucleus

whats a neutrons job

it holds the protons together in the nucleus

whats an electrons charge

-1

whats an electrons mass

no mass

where are electrons located

around the nucleus in constant motion

what is an electrons job

its responsible for reactivity and energy transfer

do opposite charges attract or repel

attract

do like charges attract or repel

repel

whats the force between neutral charges?

there is no force between objects

How can a circuit exist?

if there’s a continuous closed path that allows electrons to flow through. (Ex. Electromagnet)

what objects can interact with magnets

certain metals and objects with at least 90% iron

What types of matter can magnetic forces need to act through

magnetic forces DONT need a medium to act

the further away an object and a magnet are, the __ the magnetic force

weaker

The closer the magnet and object are, the __ the magnetic force

Stronger

whats an electromagnet

a magnet created by passing an electric current through a coil of wire (conductor)

why might an electromagnet be better than a permanent magnet

you can turn it on and off, and you can control the strength.

Electric force

a push or pull between 2 charged objects

electric charge

an imbalance of positive or negative charge due to movement of electrons, usually by friction

attraction

when 2 opposite forces meet (positive and negative) to create a pull

Repulsion

when 2 like forces meet (positive and positive; negative and negative) to create a push

Electric current

a continuous flow of electrons

positive charge

an object with more protons than electrons

negative charge

an object with more electrons than protons

Magnetic force

A push or pull between magnetic objects. It’s strongest when magnets are closest together

magnetic field

the area around a magnet where force on other magnetic objects can be obsevered.

Magnet

An object that exerts force (pull and sometimes push ) on certain metals without touching them

north pole

the end of the magnet that points towards earths North Pole in a compass. It’s attracted to the South Pole of another magnet

south pole

points towards the earths South Pole in a compass and is attracted to the North Pole of another magnet

Permanent magnet

an object that retains its magnetic field without a current