AC Circuits and Transformers Concepts

AC Circuits and Transformers Concepts

Assessment

Interactive Video

Physics, Science

8th - 12th Grade

Hard

Created by

Lucas Foster

FREE Resource

The video tutorial explains a simple voltage booster circuit using a step-up transformer. It covers the basic operation of transformers, emphasizing the role of AC waves and back emf in boosting voltage. The tutorial also highlights the transformer's voltage ratio and its impact on output voltage. Additional components like a light bulb are discussed, and viewers are directed to further resources for more efficient circuits. The video concludes with a call to action for subscriptions and merchandise.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the initial voltage of the battery used in the simple voltage booster circuit?

12 volts

6 volts

3 volts

9 volts

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the current when the voltage is increased by the transformer?

It increases

It remains the same

It decreases

It fluctuates

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the voltage transformation ratio of the step-up transformer used in the circuit?

1:15

1:10

1:20

1:25

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the approximate AC voltage at the primary part of the transformer when the output voltage is 40 volts?

3 volts

1 volt

2 volts

4 volts

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which component is not necessary but included in the circuit for demonstration?

Motor

Light bulb

Diode

Switch

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What additional components are needed in the alternative boost converter circuit?

Battery and motor

Inductor and diode

Resistor and capacitor

Transistor and LED

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What can you hear in the speaker when a battery is connected to a motor and a speaker?

The sound of the battery

The sound of the light bulb

The sound of the motor

The sound of the transformer

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