Electric Circuits — Quiz Answers

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3

After hearing about an accident on his normal route, Mr. Gujral checks for alternate routes to get to work. What type of circuit does this traffic situation model?

A
a parallel circuit because there is only one path
B
a parallel circuit because there is more than one path
C
a series circuit because there is only one path
D
a series circuit because there is more than one path
4

The cause of a fire in a computer is described as an incorrectly wired circuit. Which statement best explains the likely cause of the fire?

A
The wiring contained a closed circuit, so the current was redirected around the components that would have provided the proper resistance.
B
The wiring contained an open circuit, so the reduced resistance caused an increase in current.
C
The wiring contained a short circuit, so the reduced resistance caused an increase in current.
D
The wiring contained an open circuit, so the current was redirected around the components that would have provided the proper resistance.
5

In a movie, the heroine saves the day by cutting a wire before the time runs out on a timer. How did she change the circuit?

A
She changed an open circuit to a closed circuit.
B
She changed a short circuit to an open circuit.
C
She changed a closed circuit to a short circuit.
D
She changed a closed circuit to an open circuit.
7

Which are disadvantages of series circuits? Choose two correct answers.

A
A break in one wire causes all current to stop.
B
If one bulb goes out, the others stay lit.
C
They are complicated to design and build.
D
If one bulb goes out, the others go out.
E
They are easy to design and build.
F
Current can flow through other branches if there is a break in one branch.
8

In a movie, the heroine saves the day by cutting a wire before the time runs out on a timer. How did she change the circuit?

A
She changed a closed circuit to a short circuit.
B
She changed an open circuit to a closed circuit.
C
She changed a short circuit to an open circuit.
D
She changed a closed circuit to an open circuit.
9

Which quantities are equal to sum of the individual values within a circuit?

A
the resistance in a parallel circuit and the voltage in a series circuit
B
the voltage in a parallel circuit and the resistance in a series circuit
C
the resistance in a parallel circuit and the current in a series circuit
D
the current in a parallel circuit and the voltage in a series circuit
10

After hearing about an accident on his normal route, Mr. Gujral checks for alternate routes to get to work. What type of circuit does this traffic situation model?

A
a series circuit because there is more than one path
B
a parallel circuit because there is more than one path
C
a parallel circuit because there is only one path
D
a series circuit because there is only one path

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