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Electrostatics 06 Berlin

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 

A neutral aluminum plate is brought near a negatively charged Styrofoam plate as shown below.    In step 3, a hand touches the top rim of the aluminum plate. This process is known as _________.

berlinelectrostatics06q_files/i0020000.jpg
a.
induction
c.
friction
b.
grounding
d.
reduction
 

 2. 

A neutral aluminum plate is brought near a negatively charged Styrofoam plate as shown below.    In step 2, area A will  _______ 

berlinelectrostatics06q_files/i0030000.jpg
a.
be negatively-charged     
c.
be positively-charged
b.
be neutral
d.
have no charges at all present     
 

 3. 

A neutral aluminum plate is brought near a negatively charged Styrofoam plate as shown below.  In step 3, the upper rim of the aluminum plate which the hand is touching_____. 

berlinelectrostatics06q_files/i0040000.jpg
a.
is a negative area
c.
is a neutral area
b.
is an area in which the charge cannot be determined
d.
is a positive area
 

 4. 

A neutral aluminum plate is brought near a positively charged Styrofoam plate as shown below.  Which one of the diagrams below shows the correct arrangement of the charges on the aluminum plate?

berlinelectrostatics06q_files/i0050000.jpg
a.
A
c.
D
b.
B
d.
C
 

 5. 

A neutral aluminum plate is brought near a negatively charged Styrofoam plate as shown below.   As a result, the aluminum pie plate will  ____ in step 4.

berlinelectrostatics06q_files/i0060000.jpg
a.
be positively-charged
c.
be negatively-charged     
b.
be neutral
d.
have no charges at all present     
 

 6. 

The aluminum pie plate is being charged by the method of ____.  

berlinelectrostatics06q_files/i0070000.jpg
a.
deduction
c.
friction
b.
conduction
d.
induction
 

 7. 

A negatively-charged piece of styrofoam is placed on the table.  A neutral aluminum plate is brought near as shown below.   In step 2  ____ .

berlinelectrostatics06q_files/i0080000.jpg
a.
protons move from the top of the aluminum plate to the bottom of the aluminum plate
c.
electrons move from the bottom of the aluminum plate to the top of the aluminum plate
b.
electrons move from the top of the aluminum plate to the bottom of the aluminum plate
d.
electrons move into the aluminum plate from the styrofoam
 

 8. 

A neutral aluminum plate is brought near a positively charged Styrofoam plate as shown below.  In step 2, area B will  _______ 

berlinelectrostatics06q_files/i0090000.jpg     
a.
have no charges at all present     
c.
be positively-charged
b.
be neutral
d.
be negatively-charged
     
 



 
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