Definitions

Question 1

Coulombs law

Answer 1

The magnitude of the electrostatic force exerted by one point charge and is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

Question 2

Electric field

Answer 2

the electric field that exist at a point is the electrostatic force experienced by a small charge itself.

Question 3

Ohms law

Answer 3

At constant temperature the potential difference across a conductor id directly proportional to the current strength in the conductor

Question 4

electrostatics

Answer 4

Study of a charge at rate

Question 5

First property of charge: charged is conserved. Law of conservation

Answer 5

The net charge of an isolated system remains constant. alternatively the electric charge can either be created or destroyed.

Question 6

Second property of charge: charges can be positive or negative

Answer 6

Like charges repel each other and unlike charges attract each other.

Question 7

Third charge property: charge can be quantized.

Answer 7

The charge can only have values that are integral multiples of the fundamental charge.

Question 8

Forth property of charge: charges can be induced

Answer 8

A method of “creating” or generating static electricity in a material by brining an electrically charged object near it.

Question 9

Fifth property of charge: A charge can be polarized.

Answer 9

Polarization occurs when an electric field distorts the negative cloud of electrons around positive atomic nuclei in a direction opposite the field.

Question 10

Electrical conductors

Answer 10

Substances that readily conduct electric charge

Question 11

Electric insulators

Answer 11

Materials that conduct electric charge poorly

Question 12

direction of charge: towards

Answer 12

attractive force point TOWARDS the charge exerting force

Question 13

Direction of charge: Away

Answer 13

A repulsive force points AWAY from the charge exerting force.

Question 14

Electric field lines

Answer 14

provide a map of the electric field in the space surrounding electric charges. always directed away from the positive charge and towards the negative charge

Question 15

Electric dipole arragment

Answer 15

The number of lines leaving a positive charge or entering a negative charge is proportional to the magnitude of the charge

Question 16

Draw of electric field

Answer 16

1. Always perpendicular to the surface of a charged object.
2. never touch or intersect one another
3. closest to one another where electric field is the strongest
4. Point in direction a positive test charged would move.
5. Surround a charge in all directions
6. Number of field lines crossing a surface perpendicular to a field is proportional to the charge and close to it.

Question 17

Direction of electric field

Answer 17

The direction at a particular point is the direction in which a test charge would move if placed at that point.