Learners read an explanation of the RL time constant and examine the formula for calculating the instantaneous current value. The current is graphed as it climbs to maximum or drops to zero. Note* In the formulas in this module, the Greek letter epsilon should be the mathematical constant 'e'.

Learners examine the concept of the RC time constant. The instantaneous voltage across the capacitor is calculated.

The learner visits a Chinese restaurant to learn how to order from the menu in Mandarin Chinese. This activity has audio content.