Physics Top Questions with Solutions.

Introduction

Welcome to this tutorial on Physics multiple-choice questions. In this session, we will solve commonly asked questions in JAMB, WAEC, NECO, and GCE exams. These questions cover force, work, velocity-time graphs, and resistance, which are core topics for students preparing for both national and international exams.

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You can watch the full class in the video below:

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Question 1: SI Unit of Force

Question:
The SI unit of force is:

• A) Newton
• B) Joule
• C) Watt
• D) Meter

Explanation:
The correct answer is Newton.

• Newton is the standard international (SI) unit for force.
• Joule is used to measure energy or work done.
• Watt is used to measure power.
• Meter is used to measure distance.

Correct Answer: A) Newton

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Question 2: Work Done Moving a Charge

Question:
The work done in moving a charge of 1 coulomb through a potential difference of 1 volt is:

• A) 1 Joule
• B) 1 Newton
• C) 1 Coulomb
• D) 1 Watt

Explanation:
Work (W) is defined as: W=Q×VW = Q \times VW=Q×V

Where Q is charge and V is potential difference.

Substitute the values: 1 C×1 V=1 Joule1 \text{ C} \times 1 \text{ V} = 1 \text{ Joule}1 C×1 V=1 Joule

Correct Answer: A) 1 Joule

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Question 3: Velocity-Time Graph for Uniform Velocity

Question:
The velocity-time graph of an object moving with a uniform velocity is:

• A) A straight line
• B) A curve
• C) A horizontal line
• D) A diagonal line

Explanation:
When an object moves with uniform velocity, the velocity remains constant over time. The graph is a horizontal line parallel to the time axis.

Correct Answer: C) Horizontal line

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Question 4: Effect of Temperature on Resistance

Question:
The resistance of a conductor is:

• A) Independent of temperature
• B) Inversely proportional to temperature
• C) Directly proportional to temperature
• D) Constant at all temperatures

Explanation:
For most conductors, resistance increases with temperature. Therefore, resistance is directly proportional to temperature.

Correct Answer: C) Directly proportional to temperature

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Question 5: Acceleration in Circular Motion

Question:
A body moves in a circular path with uniform speed. The acceleration is:

• A) Zero
• B) Constant
• C) Centripetal
• D) Radial

Explanation:
When a body moves in a circular path with uniform speed, the acceleration is directed toward the center of the circle. This is called centripetal acceleration.

Correct Answer: C) Centripetal

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Watch more educational videos and past questions: https://youtube.com/@allcbts

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Conclusion

Mastering these foundational concepts in physics—such as force, work, motion, and resistance—is crucial for achieving high scores in exams like JAMB, WAEC, NECO, and GCE. By practicing past questions and understanding their explanations, students can boost their confidence and solve similar questions with ease during exams.

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