AnswersBHS-Physics B-CRUnit Test

Electric Circuits Answers

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1
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5.38.01224

A
5.3
B
8.0
C
12
D
24
2
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A series circuit contains a 30 Ω resistor, a 20 Ω resistor, and a 10 Ω resistor. The power supply provides 100 V to the circuit.The current in the 10 Ω resistor, to two significant figures, is A.

Answer not available
3

Jonas sees this symbol in a circuit diagram.

Question illustration
A
resistor
B
bulb
C
battery
D
voltmeter
4

In a movie, the heroine saves the day by cutting a wire before the time runs out on a timer.

A
She changed a short circuit to an open circuit.
B
She changed an open circuit to a closed circuit.
C
She changed a closed circuit to an open circuit.
D
She changed a closed circuit to a short circuit.
5

The cause of a fire in a computer is described as an incorrectly wired circuit.

A
The wiring contained a short circuit, so the reduced resistance caused an increase in current.
B
The wiring contained an open circuit, so the reduced resistance caused an increase in current.
C
The wiring contained a closed circuit, so the current was redirected around the components that would have provided the proper resistance.
D
The wiring contained an open circuit, so the current was redirected around the components that would have provided the proper resistance.
6

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

A
the current in a parallel circuit and the voltage in a series circuit
B
the resistance in a parallel circuit and the current in a series circuit
C
the resistance in a parallel circuit and the voltage in a series circuit
D
the voltage in a parallel circuit and the resistance in a series circuit
7

Suchita sees this symbol shown in a circuit diagram.

Question illustration
A
to measure current
B
to measure voltage
C
to provide electrical energy
D
to use electrical energy
8

Keisha analyzes this circuit diagram.

Question illustration
A
W
B
X
C
Y
D
Z
9

A circuit is built based on the circuit diagram shown.

Question illustration
A
1.2 A
B
1.5 A
C
2.0 A
D
4.6 A
10

After hearing about an accident on his normal route, Mr. Gujral checks for alternate routes to get to work.

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

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Electric Circuits Answers — BHS-Physics B-CR