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Physics
Test Description: Electrostatics
Instructions: Answer all questions to get your test result.
1) Objects can be charged by
A
induction
B
friction
C
all answers are correct
D
contact
2) A rubbed balloon will stick to a wooden wall, which demonstrates charge
A
polarization
B
potential
C
conservation
D
transfer
3) A water molecule is an example of an electric dipole.
A
False
B
True
4) The unit for charge is the
A
ampere
B
newton
C
joule
D
coulomb
5) A material is a good insulator if outer electrons are free to roam around and are loosely arranged.
A
False
B
True
6) 53 electrons, 60 neutrons, and 61 protons are within an atom. What is the net charge on this atom?
A
- 7 charge
B
+ 7 charge
C
- 8 charge
D
+8 charge
7) Semiconductors can be made to conduct electricity and they can also be made to at like good insulators.
A
False
B
True
8) A 1.2 x 10^-4 charge and a 1.3 x 10^-4 charge are separated by a distance of 5 m. What is the magnitude of the electric force between them?
A
5.2 N
B
5.6 N
C
26 N
D
28 N
9) A 2.0 C charge and a 4.0 C charge attract each other with 10 N of force. How much force will a 2.0 charge and a 12.0 charge attract each other if the distance does not change?
A
12 N
B
30 N
C
10 N
D
5 N
10) When we allow charges to move off or onto a conductor by touching it with something connected to Earth, it is common to say we are grounding it.
A
False
B
True
*select an answer for all questions
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