Electricity & Electromagnetism

Question 1

Unlike charges give negative potential energy (attractive force). Unlike charges attract one another

Answer 1

Attraction of Electric Charges

Question 2

Charging an object by allowing to to come into contact with an object that already has an electrical charge

Answer 2

Charging by Conduction

Question 3

Two objects rub together and one becomes positively charged and the other becomes negatively charged

Answer 3

Charging by Friction

Question 4

Charging an object without direct contact (proximity to nearby object charges neutral object)

Answer 4

Charge by Induction

Question 5

Materials that allow electric charges to flow through them easily

Answer 5

Conductors

Question 6

Unit used to measure quantity of electric charge

Answer 6

Coulomb

Question 7

A flow of electricity through a conductor

Answer 7

Current

Question 8

The continuous flow of electrons through a conductor

Answer 8

Electrical current

Question 9

An electrical current that always moves in one direction

Answer 9

Direct current

Question 10

Consists of a voltage source and a continuous conducting path for a current to follow

Answer 10

Electric circuit

Question 11

The flow of electric charge electric field force field produced by an electrical charge

Answer 11

Electric current

Question 12

The field around charged particles that exerts a force on other charged particles

Answer 12

Electric field

Question 13

A map of an electric field representing the direction of the force that a positive charge would experience

Answer 13

Electric field lines

Question 14

The product of a surface area and the component of the electric field perpendicular to the surface

Answer 14

Electric Flux

Question 15

A mechanical deceive that uses wire loops rotating in a magnetic field to generate electricity

Answer 15

Electric generator

Question 16

The difference in electrical charge between two points in a circuit expressed in volts

Answer 16

Electric Potential

Question 17

Potential energy due to the position of a charge near other charges

Answer 17

Electric potential energy

Question 18

A form of energy from electromagnetic interactions

Answer 18

Electrical energy

Question 19

A fundamental force that results from the interaction of electrical charge

Answer 19

Electrical force

Question 20

Electrical nonconductors, or materials that obstruct the flow of electric current

Answer 20

Electrical insulators

Question 21

The property of opposing or reducing electric current

Answer 21

Electrical resistance

Question 22

Water solution of ionic substances that conducts an electric current

Answer 22

Electrolyte

Question 23

A magnet formed by a solenoid that can be turned on and off by turning the current on and off

Answer 23

Electromagnet

Question 24

One of four fundamental forces; the force of attraction or repulsion between two charged particles

Answer 24

Electromagnetic force

Question 25

Process in which current is induced by moving a loop of wire in a magnetic field or by changing the magnetic field

Answer 25

Electromagnetic induction

Question 26

Opposite to conventional current; electron current flows from the negative terminal to the positive terminal

Answer 26

Electron current

Question 27

An accumulated electric charge on an object from a surplus of deficiency of electrons

Answer 27

Electrostatic charge

Question 28

Magnet with two poles (North and South); all magnets are dipoles; cutting one in half creates two dipoles

Answer 28

Magnetic Dipole

Question 29

Invisible lines that map out the magnetic field around a magnet

Answer 29

Magnetic Field Lines

Question 30

The lines of force surrounding a permanent magnet or a moving charged particle

Answer 30

Magnetic Flux

Question 31

Forces that may attract or repel without touching

Answer 31

Magnetic Forces

Question 32

The ends, or sides of a magnet about which the force of magnetic attraction seems to be concentrated

Answer 32

Magnetic Poles

Question 33

The flipping of polarity of the earth’s magnetic field

Answer 33

Magnetic reversal

Question 34

The force of repulsion (pushing) or attraction (pulling) between poles of magnets

Answer 34

Magnetism

Question 35

One of the two types of electric charge; repels other negative charges and attracts positive charges

Answer 35

Negative electric charge

Question 36

Unit of resistance equivalent to volts/amps

Answer 36

Ohms

Question 37

The law that states that resistance is equal to voltage divided by current (R = V/I)

Answer 37

Ohm’s Law

Question 38

One of the two types of electric charge; repels other positive charges and attracts negative charges

Answer 38

Positive electric charge

Question 39

The rate of doing work is called power

Answer 39

Power

Question 40

Like charges give positive potential energy (repulsive force). Like charges repel one another

Answer 40

Repulsion of Electric Charges

Question 41

A material’s opposition to the flow of electric current, measured in ohms

Answer 41

Resistance

Question 42

Objects that allow charge to flow at a reduced rate (change into heat or light)

Answer 42

Resistors

Question 43

Electrical connection of components in such a manner that current flows first through one and then through the other

Answer 43

Series

Question 44

A circuit that has only one pathway for electricity to flow through

Answer 44

Simple Circuit

Question 45

A cylindrical coil of wire that becomes electromagnetic when a current runs through it

Answer 45

Solenoid

Question 46

Some materials in which, under certain conditions, the electrical resistance approaches zero

Answer 46

Superconductors

Question 47

The electric potential difference across a resistor or other part of a circuit that consumes power

Answer 47

Voltage drop