Lesson: Electromagnetic Induction in Transformers

In this lesson, we will learn how to calculate the change in the potential difference and current produced by a transformer.

Video

12:14

Sample Question Videos

01:48
03:14
02:16

Worksheet: 12 Questions • 4 Videos

Q1:

A efficient transformer has an input potential difference of 20 V and an input current of 4 A. If its output potential difference is 40 V, what is its output current?

Q2:

A transformer has 300 turns on its primary coil and 150 turns on its secondary coil. If the output potential difference is 100 V, what is the input potential difference?

Q3:

A efficient step-down transformer has 100 turns on its primary coil and 20 turns on its secondary coil. The input potential difference is 250 V and the input power is W. What is the output current?

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