Unit 1

Question 1

Which direction do Electrons flow?

Answer 1

Electrons flow from a more negative charge to a more positive charge.

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Question 2

What is Voltage?

Answer 2

Voltage is the force that causes electrons to move.

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Question 3

Electrons flow more easily through:
A. Insulator
B. Conductor

Answer 3

Electrons flow more easily through a Conductor.

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Question 4

Which is correct:

A. It is possible to have current without voltage but not voltage without current.

B. It is possible to have voltage without current but not current without voltage

C. Current and voltage can exist with or without each other.

D. Current and voltage represent the same thing but in a different direction.

Answer 4

B. It is possible to have voltage without current but not current without voltage.

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Question 5

What is required for Current to flow in a circuit?

Answer 5

A properly connected Voltage Source.

The circuit must have a path from the one side of the voltage source (through the circuit components) to the other side of the voltage source.

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Question 6

The part of the circuit that uses the electrical energy is called the ______.

Answer 6

The Load.

The Load is the part of the circuit that uses the electrical energy.

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Question 7

Electrons in the circuit shown will flow in which direction?




Answer 7

Clockwise

Electrons flow from Negative to Positive

Question 8

(image for an open switch)

This image shows a switch that would create an _______ circuit.

Answer 8

Open circuit.

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Question 9

A 100-watt light bulb draws ____ Amps of current at 100 Volts.

Answer 9

1 Amp of current.

P=IE

100w= I (100 Volts)

100w/100 Volts = I

I = 1 amp

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Question 10

Conventional current is _____.

Answer 10

identical to electron flow except opposite in direction.

Conventional current flows from positive to negative.

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Question 11

The voltage of the source in a circuit is ______ equal to the load voltage drop.

Answer 11

always equal.

The total load of a circuit always drops the total Voltage .

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Question 12

In the circuit shown, LA1 and LA2 are in ______.

1. a vengeful feud
2. parallel
3. series

Answer 12

LA1 and LA2 are connected in SERIES.

Unit 1 pages 9-17.

Question 13

In the circuit shown, LA1 and LA2 are in ______.

1. parallel
2. a loving relationship
3. series

Answer 13

Parallel. LA1 and LA2 are connected in PARALLEL.

Unit 1 pages 9-17.

Question 14

Two electrons start at the same point and have two different paths to end up at two different points, they are moving through components that are connected in _______.

1. neither series nor parallel
2. series
3. parallel

Answer 14

Neither series nor parallel.

The electrons ending up and TWO Different points. if they ended up at one it would have been parallel.

Unit 1 pages 9-17.

Question 15

If an electron must move through one component to get to another component ins a circuit?

Answer 15

The two components are connected in series.

Unit 1 pages 9-17.

Question 16

If there are two components (lets say two conflabulators) connected in series and they are the only components in a working circuit. Which of the following are true? (select ALL correct answers)

A. The voltage drop of the two components is equal.

B. The current flow through the two components is the same

C. The current flow through each component adds up to total circuit current.

D. The voltage drop of each component adds up to the source voltage.

Answer 16

B. The current flow through the two components is the same.

D. The Voltage drop of each component adds up to the source.

Unit 1 pages 9-17.

Question 17

In the portion of a circuit shown(image of parallel lamps), given that LA1 is a 100W light bulb passing 10A of current and LA2 is a 50W lightbulb. How much current in amps is passing through LA2?

Answer 17

5 amps is passing through LA2.

Solve P=IE for LA1 to get total Voltage.

100W = 10A(v)
100w/10a = 10V

Then solve P=IE for LA2 to get current.

50W = I(10V)
50w/10v = 5 Amps.

Unit 1 pages 9-17.

Question 18

The meter shown is connected to measure _____.

(image of parallel circuit with meter inserted in series, not in parallel to a load.)

A. current
B. voltage
C. student interest

Answer 18

A. The meter is connected to measure Current.

opening a circuit to connect a meter in series with a branch, is for measure the current in that branch. connecting a meter in parallel with a component is to measure the voltage drop of that component.

Question 19

The meter shown is connected properly to measure _____.

(image of parallel circuit. Meter connected in parallel with LA2 load)

A. voltage
B. current.

Answer 19

A. voltage.

connecting a meter in parallel with a component measures it’s voltage drop.

Question 20

Larger Inductance = ___________ frequencies

Answer 20

Lower frequencies. As Inductance increases, The frequency response curve moves towards the left/lower frequencies. More of the voltage drops from increases in volume of lower and lower frequencies.