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Electricity
Test Description: Part I - Physics Olympics
Instructions: Answer all questions to get your test result.
1) A neutron carries a(n)
A
negative charge.
B
variable chage.
C
positive charge.
D
no charge (neutral).
2) A glass rod is rubbed with a piece of silk. During the process, the glass rod
A
acquires a positive charge and the silk acquires a positive charge also.
B
acquires a negative charge and the silk remains neutral.
C
acquires a positive charge and the silk acquires a negative charge..
D
acquires a negative charge and the silk acquires a negative charge also.
3) Atoms are composed of
A
electrons, protons and neutrons in orbitals.
B
protons and electrons in the nucleus, and neutrons balancing them out.
C
neutrons in the nucleus, protons and electrons in the surrounding space.
D
protons and neutrons located in the nucleus, and electrons in the surrounding space.
4) Choose the statement that is FALSE.
A
Compared to electrons, protons and neutrons are massive.
B
A positively charged object contains less electrons than protons.
C
The charge on a single electron is -1.6 x 10 -19 C; on a single proton is +1.6 x 10 -19 C.
D
The charge possessed by an object is expressed using the scientific unit the Coolie
5) Like charges objects will exhibit
A
friction
B
repulsion
C
attraction
D
static
6) Choose the statement that is FALSE.
A
The inverse relationship of charges means the larger the field affected, the less the effect.
B
A wooden spoon is an insulator.
C
Examples of conductors include metals, aqueous solutions of salts, water & the human body.
D
It is impossible for two electrons to attract each other.
7) Induction can cause polarization.
A
TRUE
B
FALSE
8) During conduction,
A
objects must not touch, causing a transfer of electrons.
B
objects must touch, causing a transfer of electrons.
C
objects must not touch, or else polarization will occur.
D
objects must touch, causing polarization.
9) A conductor differs from an insulator in that a conductor
A
has faster moving molecules.
B
none of these.
C
does not have any neutrons to get in the way of electron flow.
D
has an excess of protons and electrons.
10) During a physics lab, a plastic strip was rubbed with cotton & became positively charged because
A
the plastic strip acquired extra protons during the charging process
B
protons were created as the result of the charging process
C
the plastic strip lost electrons to the cotton during the charging process
D
the plastic strip acquired extra protons from the cotton
*select an answer for all questions
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