Answers26-27 IC Physics 7614BWave Properties

Electric Circuits Answers

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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
2
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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
3

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.
5

The current in the circuit shown is 2.0 A.

Question illustration
A
10 Ω
B
15 Ω
C
20 Ω
D
55 Ω
6

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
7

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
9

Which are disadvantages of series circuits? Check all that apply.

A
They are easy to design and build.
B
They are complicated to design and build.
C
A break in one wire causes all current to stop.
D
Current can flow through other branches if there is a break in one branch.
E
If one bulb goes out, the others stay lit.
F
If one bulb goes out, the others go out.
10

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.

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