Ch 19 Vocab
The attraction or repulsion of charges is the result of this. It is the force between 2 charged objects
electric force
Current electricity
moving electrical charges
name an example of an open circuit
anything that can switch on or off
Like charges ___________
Opposite charges ___________
repel
attract
what's the difference between an open current and a closed current?
open is incomplete and prevents the movement of charges
closed is complete and charges can move
What is a cation?
a positively charged ion that has lost an electron
electric current
movement through a loop
what force does a battery use?
electromagnetic force
Can something become more or less charged?
Yes, depending on conditions/environment
Give an example of a direct current
calculator, flashlight, battery powered system
An ion that has gained an electron
anion
What can increase the strength of a magnetic field?
solenoid - coil of wire
Does electrical force flow from positive other negative or negative to positive?
negative to positive
What's the difference between electric force and gravitational force?
electric force deals with charges and gravitational force deals with masses
Give an example of an alternating current
household appliance, phone chargers, plugged into wall
this is the build up of charges
static electricity
This converter is what changes the current flow direction in an alternating current
rectifier
Describe magnetic force
force exerted by the magnet. strength depends on distance object is from magnet
What are the 3 types of charges?
friction - rubbing
Conduction - charge flowing between objects
induction - no direct contact
The wider/longer a wire is the ________ resistance and _______ heat
(same word for both)
less
the formula for electric force. involves electric force and gravitational force
Coulombs Law
What is voltage
the pushing of electrons - force
Explain the difference between a direct current and an alternating current
direct current - flow in one direction through a wire
alternating current - reverses the direction of the current flow in regular patterns
Who are the 2 important people?
- founder of physics
- inventor of electrical generator and transformer
James Clerk Maxwell
Michael Faraday
What's Ohm's Law?
Explained how current, voltage, and resistance relate to each other in conductors