Clicker Questions
Formulas
Theoretical
Definitions
Free For All
100
When a glass rod rubbed with silk acquires a
positive charge, the silk acquires
A. a positive charge
B. a negative charge
C. no charge
D. it is impossible to tell which sign of charge it acquires
B. a negative charge
100
25 coulombs of charge flow in 5 seconds. What is the current?
To find current you use Q/t
25C/5t= 5A
5A
100
A protons electric field goes towards or away from the proton?
TOWARDS
100
What is a conductor, and what is an induction?
+5 if you give examples
In the induction process, a charged object is brought near but not touched to a neutral conducting object. The presence of a charged object near a neutral conductor will force (or induce) electrons within the conductor to move.
100
What is the formula for an electric field?
E=f/q
200
A rod with a positive charge is brought near a
positively charged pith ball. The pith ball is
suspended from an insulating string. The pith ball
A. will be attracted by the rod
B. will not be affected by the rod
C. will be repelled by the rod
C. will be repelled by the rod
200
A current of 18 amps flow through a current for 3 seconds. What is the charge?
I x t
18A x 3s
54C
200
Does gravitational force depend on masses?
YES
200
What is charging by induction?
Mobility of charges on a conducting objective
200
What is the charge of an electron?
-1.6x10-19
300
A charge -q is far away from a charge -Q which is
fixed in place. As -q moves closer to -Q, the work
done by the electric field is
A. negative.
B. Positive.
C. zero.
A. negative.
300
What is electrical current's formula?
I=q/t
300
What is weaker gravity or electrostatic force
GRAVITY
300
What is Polarization?
why small bits of paper or styrofoam are
attracted to a charged object
300
Are electrons free to move in the insulating materials?
Electrons are NOT free to move in insulating materials.
400
The normal tendency of positive charges is to
A. move to regions of lower electric potential
B.move to regions of higher electric potential
C. remain stationary in an electric field
D. move perpendicularly to electric field lines.
A. move to regions of lower electric potential
400
Coulombs law is?
400
A typical, neutrally charged atom has
A. just as many electrons as protons.
B. no neutrons in the nucleus.
C. more protons than electrons.
D. As many electrons as protons and neutrons combined.
at least 1 neutron.
A. Just as many electrons as protons
400
What is an electric dipole?
The center of negative charge is slightly displaced from the center of positive charge.
The electric dipole moment is a measure of the separation of positive and negative electrical charges within a system, that is, a measure of the system's overall polarity
400
What is the law of conservation?
Never can create an electric charge. Instead, charge can only move from one place to another.
500
If the distance between two point charges is tripled
while the size of the charges remains the same, the
force between the charges is multiplied by
A. 9
B. 3
C. 1/3
D. 1/9.
D. 1/9
500
What is k in the Coulombs formula?
(9x109 Nxm2/C2 )
500
If a negatively charged rod is brought close to (but not touching) an initially neutral object, the object becomes polarized and has ___________ charge.
NO CHARGE
500
What is an Electric field?
How one change affects the surrounding space, which exerts a force on another charge.
500
What is Daniella's last name.
Benitez