Electric Circuits Answers

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1
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After the effects of the troop “surge” were felt in Iraq, President Bush

o
ordered a similar surge in Afghanistan.
o
ordered additional troops into Pakistan.
a
announced a plan for an immediate US withdrawal.
a
announced a plan for a gradual US withdrawal.
2
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The invasion of Afghanistan by American troops

f
forced the Taliban to surrender Osama bin Laden.
c
caused the Taliban’s government to fall quickly.
f
failed due to UN forces supporting the Taliban.
s
suffered against the Taliban’s military forces.
4

During the US-led invasion of Afghanistan, Osama bin Laden

A
was killed by the American military.
B
was captured by coalition troops.
C
escaped to another country.
D
led Afghani military forces.
5

Following the war in Iraq,

A
Saddam Hussein’s reign continued.
B
the country became more stable.
C
many warring factions made peace.
D
the nation elected a new government.
6

As a result of the terrorist attacks on September 11, 2001,

a
approximately 1,000 people died.
t
the al-Qaeda terrorist group formed.
t
the US declared a “war on terror.”
U
US allies declared a “war on terror.”
8

The plan known as the surge, included a new strategy to combat insurgency. The plan called for troops to

A
stay in their bases and fight the war from a distance.
B
leave their bases and take over the leadership of the Iraqi military.
C
leave their bases and work more closely with the Iraqi population.
D
stay in their bases and work more closely with the Iraqi population.
9

A positive result of the war in Iraq was that

A
it led to years of peace in the country.
B
it ended the regime of a brutal leader.
C
it led to immediate stability within Iraq.
D
it smoothed tensions between factions.
10

Following the invasion, as the United States struggled to impose law and order in Iraq,

A
the Taliban began to regain control.
B
Arab groups supported US troops.
C
a violent insurgency fought US troops.
D
Hussein’s supporters returned to power.
11

Look at the circuit diagram.

Question illustration
A
one battery, two light bulbs, and three resistors
B
one battery, two switches, and three light bulbs
C
one switch, one resistor, and three light bulbs
D
one switch, one light bulb, and three batteries
12

When an electric circuit operates, a buzzer makes a sound. What happens to the electric charges in this circuit?

A
The electric charges move from the energy source and are used up at the switch.
B
The electric charges move from the energy source and are used up at the buzzer.
C
The electric charges move from the buzzer through the energy source and back to the buzzer.
D
The electric charges move from the energy source through the buzzer and back to the energy source.
13

Which would cause an electric circuit to lack a current?

A
open switch
B
closed switch
C
lighted bulbs
D
unlighted bulbs
15

What symbol would best represent an electric fan speed controller in an electric circuit?

A
Option
B
Option
C
Option
D
Option
16

Jamal draws the circuit diagram shown.

Question illustration
A
one battery, two switches, two resistors
B
two batteries, three switches, two resistors
C
one battery, four switches, one resistor
D
two batteries, three switches, two resistors
17

How does a parallel circuit change when a branch is added?

A
The total resistance increases, so the current in the circuit decreases.
B
The total resistance decreases, so the current in the circuit increases.
C
The total resistance increases, so bulbs shine at a lower brightness.
D
The total resistance decreases, so bulbs shine at a higher brightness.
18

What is the main disadvantage of parallel circuits?

A
Any break in the circuit stops the flow of charges.
B
There are multiple paths for charges to flow.
C
If one bulb goes out, the other bulbs will go out.
D
They are complicated to design and build.
19

Which statement describes one feature of a closed circuit?

A
Charges do not flow.
B
Bulbs will not shine.
C
The circuit is broken.
D
The circuit is complete.

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