Electric Charge
Electric Force
Electric Field
Math Fun
Misc.
100

These charges repel each other.

Like charges

100

This is the unit for electric force.

Newtons

100

This is the unit for electric field

Newtons/Coulomb

100

What does r represent in Coulomb's Law? What are its units?

separation distance between charges

meters

100
True or false. 

Protons are what moves between objects to create charges.

False

200

This is the charge on an electron.

-1.602 x 10-19C

200

The electric force is what type of force?

Field force

200

Electric field lines are drawn from __________ charge to _____________ charge

positive/negative

200

Given two charges, q1 = 5 x 10-6 C and q2 = 2 x 10-6 C that are separated by .001 m, what is the magnitude of the electric force between the two charges?

89900 N

200
If a glass rod is rubbed with silk, the glass rod becomes positively charged. 

What must the charge on the silk be?

Negative

300

What does it mean for electric charge to be quantized?

It exists in discrete integer units of a fundamental charge. 

300

This is the name of the equation that we use to calculate the electric force on a charge.

Coulomb's Law

300

Electric field lines can never _____________ each other.

cross

300

Given two charges, q1 = 5 x 10-6 C and q2 = 2 x 10-6 C that have an electric force between them with magnitude 8.99 N, what is the separation distance between the two charges?

0.1 m

300
This type of material behaves somewhere in between a conductor and an insulator

Semiconductor

400

What method of charging a material works for conductors but not insulators.

Charging by induction. 


400

This principle states that when more than 2 electric charges are interacting with each other, to find the net force on a given charge, you have to take the vector sum of the forces on that charge

Superposition Principle

400

In the equation for electric field that has a q0 in it, what does the q0 represent?

Charge experiencing the electric field.
400

If one force on a charge is pushing it upwards and another force on the same charge is pushing it to the right, draw a diagram on the board showing how to add the vectors to find the direction of the net force.

up and to the right

tip to tail

400

If a negatively charged object is brought close to a conductor that is then charged by induction, will the earth act as an electron source or sink?

Sink

500

Explain the process of charging by polarization. What type of charge is created?

Works for insulators.

Temporary surface charge created.

500

What are the units for Coulomb's constant?

Newtons*m2/C2

500
Come to the board and draw the electric field lines between a positive and a negative charge.
From positive to negative with curve
500

If two charges that are initially 2 m apart are moved to a distance of 6 m apart, by what factor does the resulting electric force between them change?

1/9

500

Who discovered that electric charge is quantized?

Robert Millikan
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