Vocabulary
Concepts
Problems
Formulas n stuff
Quantities
100
A material in which charges can move freely
What is an electrical conductor?
100
Who discovered that charges are quantized?
Who is Robert Millikan?
100
There are two point charges in a vacuum, −4μC and 5μC, kept 2m from each other. What is the force experienced by the charges?
k=9⋅109Nm2C2
what is -0.045 N
100
What formula is this?
F electric = Kc(q1*q2/r2)Coulombs Law
100
The quantity of charge is measured in ___
what is coulomb?
200
A material in which charges cannot move freely
What is an electrical insulator?
200
What does the superstition principle say?
what is the resultant forces on a charge is the vector sum of the forces exerted on it by 2 other charges.
200
In a region of space there is an electric field. The field is directed straight down and has a field strength of 2500NC. Into this region of space, an electron is moving north with a velocity of v=2.4×106ms. What will the electron's acceleration be in this region of space? Include both magnitude and direction.
me=9.11⋅10−31kg
qe=−1.6⋅10−19C
what is 4.4⋅1014ms2 straight up?
200
What is the formula for finding an electric field strength due to a point charge?
•E=k q/r^2
200
The coulomb constant is measured in ___
What is newtons X meters2/coulombs2?
300
the generation of voltages, currents, electric fields, or magnetic fields by interactions between these quantities without direct contact
What is induction?
300
What does coulombs law state?
what is the electric force is proportional to the magnitude of each charge and inversely proportional to the square of the distance between them.
300
What will be the electrostatic force between the two-point charges of charges +2μC and +4μC repel each other with a force of 20N when a charge of −6μC is added to each of them?
what is +20 N?
300
What formula is this? F = q x E
Electric Force
300
The quantity of an electric fields strength is measured in ___
what is newtons/coulombs?
400
the space around a charged object in which another charged object experiences an electric force
What is an electric field?
400
Electric field lines and electric field vectors are related because?
what is field lines are always tangent to filed vectors.
400
Determine the electrostatic force between the two charges of magnitude 2 C and -1 C separated by a distance 1m in air.
what is 18 × 109 N?
400
Electric Field Vectors
400
The quantity of electric force is measured in ___
What is newtons?
500
A material characterized by electrical properties somewhat between insulators and conductors.
What is semiconductors?
500
Induction but for an insulator.
what is polarization?
500
Consider a system of two charges of magnitude 2 × 10-7 C and 4.5 × 10-7 C which is acted upon by a force of 0.1 N. What is the distance between the two charges?
what is 0.9 m?
500
Electric Field Lines
500
The superstition principle is measured in ___
what is degrees?