Download 1. What happens when electrical charges are brought together? A

EOC Physical Science Sample Items Goal 3
Do Not Reproduce–NCDPI
1.
What happens when electrical charges
are brought together?
A
Unlike charges attract and like
charges repel.
B
Unlike and like charges attract.
C
Like charges attract and unlike
charges repel.
D
4.
The diagram below is a complete
circuit.
A
+ -
B
Like charges attract and repel.
C
2.
What is the resistance of a hair dryer
that uses 2.5 A when the voltage is
120 V?
A
3.
What will occur when bulb B is
unscrewed?
A
All bulbs will go out.
B
Only bulb A will continue to be
lit.
C
Only bulb C will continue to be
lit.
D
Bulbs A and C will continue to be
lit.
4.8 ohms
B
48 ohms
C
120 ohms
D
300 ohms
Why are parallel circuits, rather than
series circuits, commonly used in
wiring houses?
A
They allow appliances to operate
separately.
B
They are cheaper.
C
They have a higher total
resistance.
D
The voltage drop varies with each
resistor.
Page 1
Published October 2004. May reproduce for instructional and
educational purposes only; not for personal or financial gain.
EOC Physical Science Sample Items Goal 3
Do Not Reproduce–NCDPI
5.
Which of the following actions
would decrease the strength of an
electromagnet?
A
removing turns from the wire coil
B
increasing the amount of current
used
C
inserting a core of iron within the
coil
D
adding more turns to the wire coil
6.
Which of the following diagrams
correctly demonstrates the magnetic
field around a bar magnet?
A
B
C
D
End of Goal 3 Sample Items
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Page 2
Published October 2004. May reproduce for instructional and
educational purposes only; not for personal or financial gain.
Answers to EOC Physical Science Sample Items
Goal 3
1.
Objective 3.01
Analyze the nature of static electricity and the conservation of electrical charge: Positive
and negative charges. Opposite charges attract and like charges repel.
Thinking Skill: Knowledge
Correct Answer:
A
2.
Objective 3.03
Analyze direct current electrical circuits: Electrical potential diference, resistance,
Ohm’s Law. Simple direct current circuits, series circuit, parallel circuit.
Thinking Skill: Applying
Correct Answer:
B
3.
Objective 3.03
Analyze direct current electrical circuits: Electrical potential diference, resistance,
Ohm’s Law. Simple direct current circuits, series circuit, parallel circuit.
Thinking Skill: Organizing
Correct Answer:
A
4.
Objective 3.03
Analyze direct current electrical circuits: Electrical potential diference, resistance,
Ohm’s Law. Simple direct current circuits, series circuit, parallel circuit.
Thinking Skill: Applying
Correct Answer:
A
5.
Objective 3.04
Analyze the practical applications of magnetism and its relationship to the movement of
electrical charge.
Thinking Skill: Knowledge
Correct Answer:
A
6.
Objective 3.05
Analyze permanent magnetism and the practical applications of the characteristics of
permanent magnets..
Thinking Skill: Knowledge
Correct Answer:
B
North Carolina Testing Program
Published October 2004. May reproduce for instructional and educational
purposes only; not for personal or financial gain.