Learners examine the relationship of voltage, current, and resistance as it applies to vehicle electrical systems.

In this interactive object, learners adjust the caster of a vehicle to control its directional stability.

In this animated activity, students read about the two general types of variable resistors: potentiometers and rheostats. A brief quiz completes the learning object.

In this interactive and animated object, learners examine the SUN VAT-40 battery starting and charging system tester. This learning object demonstrates the use of the tester in diagnosing conventional 12-volt automotive charging systems. It contains audio.