Chapter 9 & 10

Question 1

A simple Device using laws of elctrostatics to detect small electric charges

Answer 1

Electroscopes

Question 2

material whose domains strongly resist changes in the directions of its magnetic field is described as

Answer 2

Magnetically hard

Question 3

Earth’s north seeking pole is called

Answer 3

South magnetic pole

Question 4

A circuit that contains a complete path for electrons to flow through is An open circuit

Answer 4

False, closed circut

Question 5

Law that relates current voltage and resistance is known as Jules law

Answer 5

False, ohm’s law

Question 6

The extent to which a material can absorb or channel lines of flux is known as permeability

Answer 6

True

Question 7

The process of diverting unwanted electric charge Directly into the earth is Called grounding

Answer 7

True

Question 8

A substance That has no unpaired electrons and is slightly repelled by Either pole of a magnet is a diamagnet substance

Answer 8

True

Question 9

This device transforms energy of an electric current into another useful form of Energy

Answer 9

Load

Question 10

When an electric field has an equal strength throughout

Answer 10

Uniform field

Question 11

This is the force that causes the forces electric charge Moving through an electric Field passing through a device

Answer 11

Deflecting force

Question 12

The extent of a planet’s magnetic field in space

Answer 12

Magnetosphere

Question 13

The SI unit for resistance

Answer 13

Ohm (Omega Symbol)

Question 14

The two belts of charged particles located above the earth’s equator to protect the earth from solar wind

Answer 14

Van allen radiation Belts

Question 15

Is material through which current Does not easily flow

Answer 15

Insulators

Question 16

This material that allows current to flow through it with no resistance

Answer 16

Superconductor

Question 17

An electrical device designed to hinder current flow

Answer 17

Resistor

Question 18

Material through which current flows easily

Answer 18

Conductor

Question 19

A device that opens and closes a circuit

Answer 19

Switch

Question 20

Rate of an electric charge flow

Answer 20

Current

Question 21

Region of Concentrated magnetism at the end of a Magnet

Answer 21

Magnetic pole

Question 22

What moves when charge flows through an electrolyte

Answer 22

Ion’s

Question 23

Orientation of the lines of flux when the inclamation at the magnetic poles is 90°

Answer 23

Vertical

Question 24

What process imparts electric charge at a distance

Answer 24

Induction

Question 25

The SI unit of current

Answer 25

Ampere

Question 26

What are used to indicate the direction and strength of a magnetic field.

Answer 26

Lines of flux

Question 27

What happens to the total current Flowing in a parallel circuit when more branches are added

Answer 27

It Increases

Question 28

What value equals the product of voltage and current In an Electric Current

Answer 28

The power of the current

Question 29

What term describes a substance with several unpaired Electrons per atom and is strongly attached to magnets

Answer 29

Ferromagnetic

Question 30

The Imaginary line That circles the earth halfway in between the two magnetic poles

Answer 30

Magnetic equator

Question 31

Circuit Protection device That uses a Narrow strip of metal to prevent excessive current through the circuit

Answer 31

Fuse

Question 32

The most important factor affecting the ease of current flow through a wire

Answer 32

Material

Question 33

Message of Magnetism used when a needle is Agnitized by holding a magnet Near the needle

Answer 33

Magnetizing by induction

Question 34

How do two like charges interact when They are brought closer together

Answer 34

They repel

Question 35

The resistance of a magnet to being demagnetized by another magnetic field

Answer 35

Coercivity

Question 36

Is the work per unit charge done to Move electric charges between different parts of The electric field

Answer 36

Voltage