ELECTROSTATICS

Question 1

how can objects be charged

Answer 1

1. friction
2. contact
3. induction

Question 2

forces that charged objects exert on each other

Answer 2

electrostatic or coulombic forces

Question 3

nature of the force between like charges

Answer 3

repel

Question 4

nature of force between unlike charges

Answer 4

attract

Question 5

what is the strength of the force between charges determined by

Answer 5

1. magnitude of the charges on the charged spheres

2. distance between the centers of the charged spheres/point charges

Question 6

what happens if charge on any particle increases

Answer 6

if the charge on any of the particles increases, the force between particles increase by the same factor provided the distance between the particles remains the same

Question 7

state the relationship of the magnitude of charges

Answer 7

directly proportional

Question 8

what happens if the distance between charged particles increases

Answer 8

if the distance between charged particles increases, the electrostatic force will decrease/ if the force increases the distance decreases

Question 9

state the relationship of the distance between charged particles

Answer 9

the electrostatic force between two charged particles is inversely proportional to the squared distance between the particles

Question 10

state coulombs law

Answer 10

the electrostatic force between two charged particles is directly proportional to the product of the charges on the particles, and inversely proportional to the square of the distance between the point charges

Question 11

the direction of the electrostatic force exerted by one charge on the other

Answer 11

1. repulsion for when the charges are like

2. attraction for when the charges are unlike

Question 12

what happens when a ferromagnetic object is placed close to a magnet w/o touching

Answer 12

it will experience an attractive force

Question 13

electric field

Answer 13

an electric field is a region/space in which a charged object will experience an electrostatic force

Question 14

direction of the electric field

Answer 14

the direction of the electric field line at a point is the direction in a which a point charge would accelerate, or move when placed at that point

Question 15

electric field line

Answer 15

an imaginary line that represents the magnitude and direction of the force

Question 16

characteristics of an electric field line

Answer 16

1. imaginary lines that represent a electric field
2. are in the direction that a + point charge would move if placed in a field
3. never cross or touch each other
4. start and end perpendicular to the surface of the charged object
5. exists in 3D around a charged object or point charge
6. strong electric field when close together=high density
7. weak field when far apart= low density

Question 17

electric field at a point

Answer 17

is the electrostatic force per unit charge at that point in the electric field

Question 18

relationship between E and Q

Answer 18

electric field is directly proportional to the magnitude of the charge causing the field and the electric field is inversely proportional to the squared distance from the charge which causes the field