Adding Resistors in a Circuit

A joulemeter will be useful when discussing energy and power in electric circuits. It is worth practising with it before using...

Teaching Guidance 16-19

This is the kind of question where using physical quantities (numbers and units) offers a direct way to sort out an answer. So...

Teaching Guidance 14-16

Adding resistors in series increases the effective resistance Adding resistors in parallel decreases the effective resistance

Lesson 16-19