Electricity and magnetism household electrical systems, magnets) MCQs in Everyday Science

By: Prof. Dr. Fazal Rehman | Last updated: May 19, 2025

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1. : What is the unit of electric current?



2. : Which component in a household electrical circuit is used to prevent overloads by breaking the circuit?



3. : What is the primary function of a transformer in an electrical system?



4. : Which of the following materials is a good conductor of electricity?



5. : In which direction do electrons flow in a conventional current?



6. : What is the unit of electrical resistance?



7. : What device is commonly used to measure electric current in a circuit?



8. : What is the primary source of magnetism in most materials?



9. : What type of magnet is a permanent magnet?



10. : What happens to the magnetic field strength of an electromagnet as the current increases?



11. : What is the function of an insulator in a household electrical system?



12. : What is the name of the force that causes a compass needle to point towards the Earth’s magnetic poles?



13. : What is the unit of electric power?



14. : Which of the following is NOT a property of a magnet?



15. : How is the resistance of a wire affected by its length?



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