AnswersCrowley Credit Recovery Physics BElectric Circuits

Electric Circuits Answers

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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.
2
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Humberto builds two circuits using identical components.Circuit 1: A series circuit with three lightbulbs Circuit 2: A parallel circuit with three lightbulbsHe then adds two more lightbulbs in a series with the bulbs in circuit 1 and two more lightbulbs on new branches in parallel with each bulb in circuit 2.

A
All bulbs in circuit 1 will shine at the same brightness as the original bulbs, while all bulbs in circuit 2 will be dimmer than the original bulbs.
B
All bulbs in circuit 1 will shine more dimly than the original bulbs, while all bulbs in circuit 2 will have the same brightness as the original bulbs.
C
The original bulbs will remain at their original brightness, but the bulbs added to circuit 1 will be dimmer than the bulbs added to circuit 2.
D
The original bulbs will remain at their original brightness, but the bulbs added to circuit 1 will be brighter than the bulbs added to circuit 2.
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 circuit diagram shows a circuit containing several different components.

Question illustration
A
two batteries
B
two switches
C
three bulbs
D
three resistors
6

A circuit that has only a single path for current to flow through is best classified into which category?

A
a series circuit
B
an open circuit
C
a parallel circuit
D
a short circuit
7

Wendy makes a graphic organizer to help herself apply Ohm’s law to electric circuits.Which formulas belong in the regions marked X and Y?

Question illustration
A
X: I = I1 + I2 + I3Y: Req = R1 + R2 + R3
B
X: Req = R1 + R2 + R3Y: I =
Option B
C
X: I = I1 = I2 = I3Y: V = V1 + V2 + V3
D
X: I = Y: V = V1 = V2 = V3
Option D
8

Keisha analyzes this circuit diagram.

Question illustration
A
W
B
X
C
Y
D
Z
9

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
10

A circuit featuring multiple paths through which current can flow is best classified into which category?

A
a series circuit
B
an open circuit
C
a parallel circuit
D
a short circuit
11

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
12

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
13

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
14

[BLANK]

A
5.3
B
8.0
C
12
D
24
15

Maria makes a graphic organizer to compare open, closed, and short circuits. She adds the labels shown.Label 1: Current flows in the circuit.Label 2: This forms when a bulb burns out.

Question illustration
A
Label 1: ZLabel 2: X
B
Label 1: YLabel 2: W
C
Label 1: XLabel 2: Y
D
Label 1: YLabel 2: Z
16

The current in the circuit shown is 2.0 A.

Question illustration
A
10 Ω
B
15 Ω
C
20 Ω
D
55 Ω

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