Comprehension and additional task exercises pages 180 and 181 from Next Page Science. Suitable for 6th to 9th grade US. Accompanying PowerPoint, word searches and answers available for free from www.nextpagescience.com.

This exercise covers:

• A car ‘T’ junction as an analogy for a circuit junction

• The four principles governing the operation of parallel circuits

• The principles explained step-by-step through a two and three branch circuit with the same resistance bulbs and a three branch circuit where on branch has a different resistance bulb

• How increasing the number of branches decreases total resistance illustrated through calculation

• Similar example circuits to practise calculations

• Practise identifying missing currents in branched circuits

• Practise identifying which component has the highest resistance from the current flowing through it

• Amazing WHAT? facts