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Contents & notes: what this topic covers
Under Current Electricity, the JAMB Physics syllabus expects you to study:
- 31. Current Electricity
- (i) electromagnetic force (emf), potential difference (p.d.), current, internal resistance of a cell and lost Volt;
- (ii) Ohm’s law, resistivity and conductivity;
- (iii) measurement of resistance;
- (iv) meter bridge;
- (v) resistance in series and in parallel and their combination;
- (vi) the potentiometer method of measuring emf, current and internal resistance of a cell.
- (vii) electrical networks.
Study notes & guidance
Study Current Electricity 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 Current Electricity, you should be able to:
- Differentiate between emf, p.d., current and internal resistant of a cell;
- Apply Ohm’s law to solve problems;
- Use metre bridge to calculate resistance;
- Compute effective total resistance of both parallel and series arrangement of resistors;
- Determine the resistivity and the conductivity of a conductor;
- Measure emf. current and internal resistance of a cell using the potentiometer;
- Identify the advantages of the potentiometer;
- Apply Kirchoff’s law in electrical networks.
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.