Atomic Theory & The Resistor is one of 9 topics in the Grade 10 Electrical Technology CAPS syllabus, covered across 3 lessons on Study Vault. Below are real practice questions from this topic with full worked answers.
Sample practice questions
Easy
1. What direction does conventional current flow describe, by long-standing convention?
From positive to negative
From negative to positive
Current does not flow in either direction under this convention
Only in a circular direction, never linear
Answer: From positive to negative — Conventional current flow is the historical convention that describes current as flowing from positive to negative, the opposite direction to actual electron movement.
Easy
2. Which of the following is an example of a conductor?
Copper
Rubber
PVC plastic
Glass
Answer: Copper — Copper is a conductor, having many free electrons that allow current to flow easily, unlike insulators such as rubber, PVC plastic, or glass.
Medium
3. Name the material category that conducts under some conditions but not others, depending on factors like added impurities or applied voltage, with silicon as the most common example.
Answer: semiconductor — A semiconductor conducts under some conditions but not others, with silicon being the most common example, forming the basis of diodes and transistors studied at a later stage.
