This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 10 Electric Current And Its Effects – Quiz 14 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 10 Electric Current And Its Effects Quiz 14 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The coil of wire in an electric heater is called an ..... A) Battery. B) Element. C) Fuse. D) None of the above. Show Answer Correct Answer: B) Element. 2. WHo discovered the magnetic effect of current? A) Galileo Galilei. B) Newton. C) Marconi. D) H C Oersted. Show Answer Correct Answer: D) H C Oersted. 3. When dealing with batteries, the negative side is the higher potential. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 4. In a non-uniform magnetic field the lines of force are: A) Circular. B) Parallel to each other. C) Non parallel. D) None of these. Show Answer Correct Answer: C) Non parallel. 5. Copper get transferred from the ..... to the ..... A) Anode, cathode. B) Cathode, anode. C) All the above. D) None of the above. Show Answer Correct Answer: A) Anode, cathode. 6. Ria made a electrolytic cell with carbon rods as electrodes and alcohol as electrolyte. She used 2 cells. But the cell did not work. Why? A) Because the electrodes were made up of carbon. B) Because alcohol does not conduct electricity. C) Maybe the cells provided enough energy. D) None of the above. Show Answer Correct Answer: B) Because alcohol does not conduct electricity. 7. Those substances which have very low resistance are called as ..... A) Conductors. B) Insulators. C) Ametre. D) Voltmeter. Show Answer Correct Answer: A) Conductors. 8. The arrangement where an electric current flows in a conductor when it is connected to a source of electric current is known as A) Electrical energy. B) Elements of a circuit. C) Conducting wires. D) Electric circuit. Show Answer Correct Answer: D) Electric circuit. 9. An electric current that continually reverses direction over time is known as a(n) A) Direct current. B) Alternating current. C) Simple current. D) None of the above. Show Answer Correct Answer: B) Alternating current. 10. A bulb uses which of the following effect of electric current to glow? A) Heating Effect. B) Magnetic Effect. C) Chemical Effect. D) All of the above. Show Answer Correct Answer: A) Heating Effect. 11. Conduction of electricity in liquids occurs through electrons. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 12. What gets deposited on the plate connected to the negative terminal of the battery? A) Zinc. B) Gold. C) Silver. D) Copper. Show Answer Correct Answer: D) Copper. 13. The path along which electricity travels. A) Fuse. B) Electric Discharge. C) Electric circuit. D) Insulator. Show Answer Correct Answer: C) Electric circuit. 14. For electroplating an iron object with copper metal, a copper plate is made ..... A) Positive electrode. B) Negative electrode. C) All the above. D) None of the above. Show Answer Correct Answer: A) Positive electrode. 15. Which is NOT a distinguishing feature of an electric generator? A) An electric generator converts mechanical energy into electrical. B) An electric generator converts electrical energy into mechanical energy. C) It generates electricity. D) It is based on the principle of electromagnetic induction. Show Answer Correct Answer: B) An electric generator converts electrical energy into mechanical energy. 16. Every magnet has 2 poles ..... and ..... A) North and south. B) East and west. C) All the above. D) None of the above. Show Answer Correct Answer: A) North and south. 17. Unlike poles of a magnet will A) Repel. B) Attract. C) All the above. D) None of the above. Show Answer Correct Answer: B) Attract. 18. Which of the following is the CORRECT description of the operation of an electric motor? A) The electric motor uses electricity. B) The operation is based on the principle of electromagnetism. C) The motor converts electric energy into mechanical energy. D) All of the above. Show Answer Correct Answer: D) All of the above. 19. If a positive terminal of one cell is connected to the negative terminal of the next cell it is known as A) Electric current. B) Fuse. C) Battery. D) Element. Show Answer Correct Answer: C) Battery. 20. ..... is a naturally occurring magnet. A) Lodestone. B) Hapstone. C) Loading. D) Walking stone. Show Answer Correct Answer: A) Lodestone. 21. What process brings the deep cold ocean currents up to the surface? A) Conduction. B) Global Wind Patterns. C) Convection Currents. D) Temperature and salinity. Show Answer Correct Answer: C) Convection Currents. 22. Which of the following metals is used in electroplating to make objects appear shining? A) Iron. B) Copper. C) Chromium. D) Aluminium. Show Answer Correct Answer: C) Chromium. 23. The process of depositing a layer of any desired metal on another metal by means of electricity is called? A) Chromo-plating. B) Electroplating. C) Corroding. D) Scratching. Show Answer Correct Answer: B) Electroplating. 24. Nichrome contains A) 20% nickel 80% chromium. B) 80% nickel 20% chromium. C) 40 % chromium 60% zinc. D) None of the above. Show Answer Correct Answer: B) 80% nickel 20% chromium. 25. Which of these particles are responsible for the flow of electric current-electrons, protons or neutrons? A) Electrons. B) Protons. C) Neutrons. D) None of the above. Show Answer Correct Answer: A) Electrons. ← PreviousNext →Related QuizzesClass 7 Science Chapter 10 Electric Current And Its Effects Quiz 1Class 7 Science Chapter 10 Electric Current And Its Effects Quiz 2Class 7 Science Chapter 10 Electric Current And Its Effects Quiz 3Class 7 Science Chapter 10 Electric Current And Its Effects Quiz 4Class 7 Science Chapter 10 Electric Current And Its Effects Quiz 5Class 7 Science Chapter 10 Electric Current And Its Effects Quiz 6Class 7 Science Chapter 10 Electric Current And Its Effects Quiz 7Class 7 Science Chapter 10 Electric Current And Its Effects Quiz 8Class 7 Science Chapter 10 Electric Current And Its Effects Quiz 9Class 7 Science Chapter 10 Electric Current And Its Effects Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books