Show:
Circuits
Charge
Electric
Magnetism
Electromagnets
100
What is the unit of resistance?
Ohm
100
A proton has what type of charge?
Positive
100
Two positve charges are held near each other. What will happen to them when you let them go?
Repel
100
What will opposites poles do if they are brought together?
They will attract
100
What does AC stand for?
Alternating Current
200
If electrons are flowing to the left, which direction is the current flowing?
Right
200
What is the charge of a neutral object? (Include Unit)
0 coulombs
200
If two charges attract, what must be true about their charges?
They are opposite
200
What must be true of the atoms in a material for it to be magnetic?
They are aligned
200
What device uses kinetic energy to produce electrical energy?
Generator
300
What type of circuit has two or more separate branches?
Parallel
300
An ion as 8 protons and 9 electrons, what type of charge does this ion have?
Negative
300
Electric fields point from where to where?
From positive to negative
300
A permanent bar magnet is broken into four pieces. How poles are there total?
8 poles
300
Using an electric field to create a magnetic field or vice versa is called what?
Induction
400
In a series circuit, which quantity will remain constant throughout the entire circuit?
Current
400
What is the charge of a single electron?
-1.6 x 10^-19 C
400
Two charges are separated. If the distance separating them is tripled, what specifically happens to the strength of the electric force?
It becomes 9 times weaker.
400
In relation to a bar magnet, where will the magnetic field be the strongest?
Near the poles
400
You are moving a magnet to induce current in a coil of wire. What are two ways to definitely increase the amount of current induced?
Increase the number of loops Increase the strength of the magnetic Move the magnet faster
500
In a simple circuit, there is a 8.0 V battery and a 2.0 Ohm resistor. What is the current in the circuit?
4.0 A
500
During an electrical discharge, 5.0 E 19 are transferrred. What was the total amount of charge?
-8.0 C
500
A 2.0 coulomb charge and a -4.0 coulomb charge are separated by a distance of 2.0m. What is the electric force acting on them?
1.8 E 10 N towards each other
500
In non-magnetic materials, what happens to the fields of the individual atoms?
They cancel out
500
What must be done to an electron to create a magnetic field?
The electron must be in motion