Transformer Principles and Functions

Transformer Principles and Functions

Assessment

Interactive Video

Physics, Science, Other

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial explains the operation of transformers, starting with their basic structure, which includes an iron core and coils. It discusses alternative designs and the fundamental principle of magnetic induction. The tutorial details how an alternating current in the primary coil induces a magnetic field, which then generates an alternating current in the secondary coil. The relationship between voltage and the number of coil turns is also covered, emphasizing that more turns result in higher voltage and lower current per coil.

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9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the basic structure of a transformer?

A wooden frame with copper wires

An iron core with coils wrapped around it

A glass tube with liquid inside

A plastic case with metal rods

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is necessary for constructing a transformer?

A resistor and a capacitor

A solar panel and a diode

An induced magnetic field to induce a current

A battery and a switch

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How are the primary and secondary coils usually arranged?

Suspended in air

Wrapped around an iron core

Placed inside a glass tube

Wrapped around a plastic core

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when an alternating current flows through the primary coil?

A static electric field is created

The coil heats up and melts

A changing magnetic field is induced

The current stops flowing

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of the iron core in a transformer?

To contain the magnetic flux

To insulate the coils

To conduct electricity

To provide mechanical support

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the number of turns in a coil affect the voltage?

Voltage is only affected by the core material

The number of turns does not affect voltage

More turns result in more voltage

More turns result in less voltage

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What remains constant between the primary and secondary coils?

The frequency

The current

The resistance

The voltage

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