Fields and Dipoles

Question 1

define field

Answer 1

when a numerical value can be associated to some particular region of space in order to quantify the effect of forces acting in that region of space

Question 2

two most common fields

Answer 2

gravitational and electric

Question 3

which way do arrows go with positive charge

Answer 3

away from the particle

Question 4

which way do arrows go with negative chrage

Answer 4

towards the particle

Question 5

is electric field a scalar or a vector quantity

Answer 5

vector

Question 6

what does density of arrows around a particle in a field tell you

Answer 6

strength of the field

Question 7

how to find the value of E (strength of field)

Answer 7

using a test charge

Question 8

what is a test charge

Answer 8

small positive charge near the charge that is creating the field

Question 9

equation for most cases of finding electric field strength

Answer 9

E = F/q
where E is field strength
F is the force and q is the test charge

Question 10

what makes the strength of electric field equation complicated

Answer 10

coulombs law so the force is coulombs force so sub that into F

Question 11

define electric dipole

Answer 11

two charges q+ and q- separated by a total distance 2d

Question 12

magnitude of dipole moment vector mu

Answer 12

2dq

where 2d is the distance between particles or l

Question 13

direction of dipole moment vector mu

Answer 13

from -q to +q

Question 14

how to approximate the dipole on water

Answer 14

negative charge is on the oxygen and the positive charge is between the hydrogens