Introductory Electronics

Contents & notes: what this topic covers

Under Introductory Electronics, the JAMB Physics syllabus expects you to study:

• 39. Introductory Electronics
• (i) distinction between metals, semiconductors and insulators (elementary knowledge of band gap is required);
• (ii) intrinsic and extrinsic semiconductors (n- type and p-type semiconductors);
• (iii) uses of semiconductors and diodes in
• rectification and transistors in amplificatio
• (iv) elementary knowledge of diodes and transistors.

Study notes & guidance

Study Introductory Electronics using a recommended Physics textbook that follows the JAMB syllabus. Work through the contents listed above one by one, make brief notes in your own words, and then practise as many questions on this topic as you can — in Physics, understanding and steady practice matter far more than memorising. Use the objectives below as a checklist: if you can do each one confidently, you have mastered this topic.

Objectives — candidates should be able to

After studying Introductory Electronics, you should be able to:

1. Differentiate between conductors, semi- conductors and insulators;
2. Distinguish between intrinsic and extrinsic semiconductors; distinguish between electron and hole n; carriers;
3. Analyse diodes and transistor
4. Relate diodes to rectification and transistor to amplification.

These objectives are from the official JAMB syllabus. Use them as a checklist — if you can do each one confidently, you have mastered this topic.

Source: official JAMB UTME Physics syllabus (IBASS, jamb.gov.ng). Reproduced for study use. Last checked: 17 Sept 2026. Always confirm the current syllabus on the official portal.