It is essential to become well-versed in the use of an oscilloscope for displaying voltages. If you have access to more than...

Teaching Guidance 16-19

Class practical: an introduction to the concept of internal resistance, using a more interesting example than a battery.

14-16

Class practical: finding an internal resistance of a supply from the power dissipated by a load resistance.

Practical Activity 14-16

This activity introduces the internal resistance of a cell. You can easily point out the distance that the charged particles...

Classroom Activity 14-16

The batteries commonly used in school science practical work are torch batteries rated at 1.5 volt . If two of these batteries...

Physics Narrative 11-14

The starting point for the theory can be either Kirchhoff’s second law or conservation of energy in the circuit (the same...

Lesson 16-19