NECO Basic Electricity Questions and Answers 2025 (100% Sure) Theory & Obj Solution

Are you preparing for the NECO 2025 Basic Electricity examination? You’re in the right place. This article provides you with 100% verified theory and objective (OBJ) questions and answers for Basic Electricity, helping you pass with confidence. We’ve also included exam tips, and frequently asked questions (FAQs) to guide your preparation.

NECO 2025 Basic Electricity Objective (OBJ) Questions and Answers

Here are sample OBJ questions that reflect what you might expect in the exam. Practice them thoroughly.

OBJ Questions:

1. Which of the following materials is a good conductor of electricity?
   A. Rubber
   B. Plastic
   C. Copper
   D. Wood
   ✅ Answer: C. Copper

2. The unit of electric current is?
   A. Volt
   B. Ohm
   C. Ampere
   D. Watt
   ✅ Answer: C. Ampere

3. Ohm’s law is mathematically represented as?
   A. V = IR
   B. P = IV
   C. I = VT
   D. R = VI
   ✅ Answer: A. V = IR

4. Which of these devices stores electrical energy?
   A. Resistor
   B. Capacitor
   C. Diode
   D. Inductor
   ✅ Answer: B. Capacitor

5. Which instrument is used to measure electric current?
   A. Voltmeter
   B. Ammeter
   C. Ohmmeter
   D. Wattmeter
   ✅ Answer: B. Ammeter

NECO 2025 Basic Electricity Theory Questions and Answers

Below are likely theory questions with sample answers:

Question 1:

State Ohm’s Law and explain its significance in electrical circuits.

✅ Answer:
Ohm’s Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points, provided the temperature remains constant.
Mathematically: V = IR, where V = voltage, I = current, R = resistance.
This law is significant because it allows electricians to calculate current, voltage, or resistance in electrical circuits.

Question 2:

Explain the difference between a series and a parallel circuit.

✅ Answer:

• Series Circuit: Components are connected end-to-end, so the same current flows through all parts. If one component fails, the whole circuit is broken.

• Parallel Circuit: Components are connected across the same voltage source. Each component operates independently, and current is divided among the branches.

Question 3:

List and explain three types of electrical materials and give one example of each.

✅ Answer:

1. Conductors – Allow electric current to pass through easily (e.g., copper).

2. Insulators – Resist electric current (e.g., rubber).

3. Semiconductors – Have conductivity between conductors and insulators (e.g., silicon).

Question 4:

Draw and label a simple electric circuit containing a battery, a switch, and a bulb.

✅ Answer:
(You can draw this on paper – make sure to label: battery (with + and -), switch, connecting wires, and bulb.)
The bulb should light up when the switch is closed.

Question 5:

Define the following terms: (i) Resistance, (ii) Capacitance, (iii) Power

✅ Answer:

• Resistance: The opposition to the flow of electric current in a material, measured in Ohms (Ω).

• Capacitance: The ability of a component to store electrical energy in the form of an electric field, measured in Farads (F).

• Power: The rate at which electrical energy is consumed or generated in a circuit, measured in Watts (W).

Tips for Passing NECO Basic Electricity 2025

• Study past questions to familiarize yourself with the format.

• Understand basic formulas like Ohm’s Law, power, energy, and resistance calculations.

• Practice drawing circuits neatly and label correctly.

• Master the symbols of components (resistor, diode, cell, etc.).

• Don’t cram – focus on understanding concepts.

FAQs About NECO Basic Electricity 2025

Is NECO Basic Electricity difficult to pass?

Not if you prepare well! Focus on understanding concepts, formulas, and practicing past questions.

How many questions are in the OBJ section?

Typically, you’ll answer around 50 multiple-choice questions.

What should I bring to the exam hall?

You should come with your NECO exam slip, HB pencils, eraser, calculator, and a ruler. Avoid bringing prohibited items like phones.

Will there be calculations in the theory section?

Yes. Be ready to solve simple circuit calculations using Ohm’s law, power formulas, etc.

Where can I get past NECO Basic Electricity questions?

You can find them from NECO recommended textbooks, educational forums, or local bookshops that sell past question compilations.

Related Article: NECO Civic Education Questions and Answers 2023 (100% Sure) Theory & Obj Solution

If you found this helpful, feel free to share with your classmates or school group chats. Wishing you success in your NECO 2025 Basic Electricity exam!