What is the purpose of using the microCoulomb unit?
What is to reduce need for scientific notation (easier #s to deal with).
100
If an object has a positive charge, has it gained or lost electrons?
What is lost
100
When two objects are charged by friction, their resulting charges are:
What is opposite (one neg one pos)
100
If two positive charges are near each other, will the field lines of their electric fields ever cross?
What is no
100
If you have two objects with the same charge, to solve for force between them, what do you plug into the equation?
What is q^2 (NOT 2q)
200
In the electric Force equation, the Force can be either a force of _____ or a force of _______.
What is attraction and repulsion.
200
A vinyl strip becomes ____ charged when rubbed with fur, and an acetate strip becomes _____ charged when rubbed with silk
What is negative / positive
200
What type of material can you charge by friction?
What is insulators only
200
What test charge do you place in an electric field to determine the direction of the electric field?
What is a small positive (+) test charge
200
If an objects loses 5 electrons, how do you figure out the new charge of the object?
What is 5(1.6 x 10^-19)
Resulting charge is +
300
Is electric potential a TOTAL or AVERAGE value of electric potential energy?
What is average
300
When you bring your hand near a pie plate that is resting on a negatively charged foam board, does your hand take electrons from or give electrons to the pie plate?
What is takes electrons
300
When 2 objects are charged by contact, their resulting charges are:
What is the same (both pos or both neg)
300
In the electric field equations, what if the difference between 'q' and 'Q'?
What is 'q' is a charge located IN an electric field, and the 'Q' is the charge that sets up the field (the "source").
300
In what direction are field lines drawn around a negative source charge?
What is into (towards) the (-) charge.
400
What is the unit of the strength of an electric field?
What is N/C
400
What is the charge of a pith ball that is brought near a negatively charged vinyl strip?
What is neutral (but polarized)
400
What type of material can you charge by contact?
What is conductors only
400
If I do 7J of work to push a positive charge towards a positively charged pie tin, how much electric potential energy does the charge gain?
What is 7J
400
If the force acting on a positive test charge is directed TOWARDS the source, what is the charge of the source?
What is (-)
500
What is the unit for electric potential?
What is volt
500
If a charged object is attracted to a neutral object, what must be happening to the particles in the neutral object?
What is charge polarization
500
What are the two steps of charging by induction?
What is charge polarization, then either removing or giving electrons to the polarized object.
500
If an electric field is acting due south, in what direction would a force be acting on an electron in the field?
What is north.
500
If you triple each charge, and halve the distance between them, how is the force affected?