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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