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AreAre

VocabularyVocabulary

Electro-Electro-Magnetism Magnetism

(EM)(EM)

Right-Hand Right-Hand RuleRule

TransformerTransformerss

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400

500

VocabElectromagnetism

(EM)Right-Hand

RuleTransformers

100

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300

400

500

100

200

300

400

500

100

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100

Is created when Is created when current flows through current flows through a wire coil wrapped a wire coil wrapped around a pieced of around a pieced of

ironiron

What is: What is: an an electromagnetelectromagnet

What are two What are two main ideas of main ideas of

the cell theory?the cell theory?

This type of solution is This type of solution is characterized by characterized by water molecules water molecules

moving into and out of moving into and out of the cell at the same the cell at the same

raterate

A long coil of wire with A long coil of wire with many loops used to many loops used to

create a large magnetic create a large magnetic fieldfield

What is: What is: a solenoida solenoid

A device that converts A device that converts electric energy to electric energy to

rotational kinetic energyrotational kinetic energy

What is: What is: an an electric motorelectric motor

Maintaining Maintaining conditions conditions suitable for suitable for

survivalsurvival

A device that is used A device that is used to detect very small to detect very small

currentscurrents

What is: What is: a a galvanometergalvanometer

The process in which The process in which current is generated in a current is generated in a wire due to the relative wire due to the relative

motion between the wire motion between the wire and the magnetic fieldand the magnetic field

What is: What is: EM EM inductioninduction

Of the following diagrams, the Of the following diagrams, the one most similar to what you one most similar to what you would expect to see inside the would expect to see inside the

iron of a solenoid iron of a solenoid

What is:What is:

How many electrons pass

through a circuit in 1 second?

Of the following, the Of the following, the electromagnet that would electromagnet that would produce the magnetic field produce the magnetic field

with the maximum with the maximum strength: one with 10 loops, strength: one with 10 loops,

20 loops, or 40 loops20 loops, or 40 loops

What is: What is: the one the one with 40 loopswith 40 loops

One of two ways to One of two ways to increase the magnitude of increase the magnitude of the magnetic field in an the magnetic field in an

electromagnetelectromagnet

What is: What is: increase increase the current or the the current or the number of loopsnumber of loops

Of the following materials, Of the following materials, the one that should be used the one that should be used

in addition to a spool of in addition to a spool of wire to create an wire to create an

electromagnet: glass rod, electromagnet: glass rod, iron rod, or wood rodiron rod, or wood rod

What is: What is: the iron the iron rodrod

What happens to the What happens to the electromagnet when you electromagnet when you reverse the direction of reverse the direction of

current flowcurrent flow

What is: What is: the poles the poles are reversedare reversed

The part of your hand that The part of your hand that indicates the direction of indicates the direction of

the current when using the the current when using the right-hand ruleright-hand rule

What is: What is: your your thumbthumb

The direction of the magnetic field The direction of the magnetic field above the following wire if the above the following wire if the current is flowing to the rightcurrent is flowing to the right

What is: What is: out of the out of the page or toward page or toward

youyou

What is the What is the attractive force attractive force between water between water

molecules called?molecules called?

Strands of DNA; Strands of DNA; contain contain

directions for directions for making proteinmaking protein

The direction of the magnetic field The direction of the magnetic field inside the following loop if the inside the following loop if the

arrow indicates the direction of arrow indicates the direction of the currentthe current

What is: What is: out of the out of the page or toward youpage or toward you

The direction of the magnetic field The direction of the magnetic field to the left of the following wire if to the left of the following wire if

current is flowing upwardcurrent is flowing upward

What is: What is: out of the out of the page or toward youpage or toward you

The direction of The direction of current if the current if the

direction of the direction of the magnetic field is magnetic field is

clockwiseclockwise

What is: What is: into the into the page or away from page or away from

youyou

The relationship between The relationship between the number of turns on the the number of turns on the primary coil compared to primary coil compared to

the number of turns on the the number of turns on the secondary coil of a step-secondary coil of a step-

down transformer down transformer

What is: What is: primary is primary is greater than greater than secondarysecondary

A transformer can step this A transformer can step this up but in no way can step up but in no way can step

up thisup this

What is: What is: voltage voltage then power or then power or

energyenergy

How power delivered to How power delivered to the secondary circuit the secondary circuit relates to the power relates to the power

delivered to the primary delivered to the primary circuit of a transformercircuit of a transformer

What is: What is: they are they are equal to one anotherequal to one another

A step-up transformer A step-up transformer does this to voltage and does this to voltage and

this to currentthis to current

What is: What is: increase increase voltage and decrease voltage and decrease

currentcurrent

The voltage across the The voltage across the secondary circuit of a step-secondary circuit of a step-

up transformer that has up transformer that has 250 turns on its primary 250 turns on its primary

coil, 7000 turns on its coil, 7000 turns on its secondary coil, and a secondary coil, and a

primary voltage of 18.0 V primary voltage of 18.0 V

What is: What is: 504 V504 V

FinalFinalJeopardyJeopardy

TransformerTransformerss

The current in the primary The current in the primary circuit of a step-up circuit of a step-up

transformer if the primary transformer if the primary coil has 40 turns, the coil has 40 turns, the

secondary coil has 1200 turns, secondary coil has 1200 turns, and the current in the and the current in the

secondary circuit is 1.50 Asecondary circuit is 1.50 A

What is: What is: 45.0 A45.0 A

DailyDailyDouble!Double!