This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 10 Electric Current And Its Effects – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 10 Electric Current And Its Effects Quiz 10 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In fleming's left hand rule the fore finger denotes the direction of ..... A) Magnetic field. B) Force. C) Current. D) None of these. Show Answer Correct Answer: A) Magnetic field. 2. An electric motor is a device which transforms: A) Mechanical energy into electrical energy. B) Heat energy into electrical energy. C) Electrical energy into heat energy. D) Electrical energy into mechanical energy. Show Answer Correct Answer: D) Electrical energy into mechanical energy. 3. The S.I. unit of magnetic field is: A) Tesla. B) Volt. C) Ampere. D) Ampere. Show Answer Correct Answer: A) Tesla. 4. What is the relationship between Rubber and Insulator? A) Rubber:Insulator. B) Rubber:Conductor. C) Rubber:Metal. D) Rubber:Liquid. Show Answer Correct Answer: A) Rubber:Insulator. 5. What is the primary difference between a series circuit and a parallel circuit? A) A series circuit has only one path for current to flow, while a parallel circuit has multiple paths. B) A series circuit has multiple paths for current to flow, while a parallel circuit has only one path. C) A series circuit requires a battery, while a parallel circuit does not. D) A series circuit uses alternating current, while a parallel circuit uses direct current. Show Answer Correct Answer: A) A series circuit has only one path for current to flow, while a parallel circuit has multiple paths. 6. What are conductors in the context of electricity? A) Materials that absorb electric current. B) Elements that generate electric current. C) Substances that block the flow of electric current. D) Materials that allow the flow of electric current. Show Answer Correct Answer: D) Materials that allow the flow of electric current. 7. Who discovered the magnetic field of electric current? A) Hans Christin Oyster. B) James Kristin Oersted. C) Lans Christin Oestred. D) Hans Christian Oersted. Show Answer Correct Answer: D) Hans Christian Oersted. 8. All liquids conduct electricity. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 9. The sure test of magnetism is: A) Attraction. B) Repulsion. C) Both (a) and (b). D) None of these. Show Answer Correct Answer: B) Repulsion. 10. The device which transfers energy to electric charges in a circuit is A) Battery. B) Voltmeter. C) Ammeter. D) Electric switch. Show Answer Correct Answer: A) Battery. 11. Which of these charges has the greatest magnitude? A) A charge of-4. B) A charge of-1. C) A charge of +1. D) A charge of +3. Show Answer Correct Answer: A) A charge of-4. 12. If the number of turns in the coil of an electromagnet is more, the strength of the electromagnet will be A) Lesser. B) Greater. C) None of these. D) Same. Show Answer Correct Answer: B) Greater. 13. Element of an electric iron is made up of A) Nickel. B) Chromium. C) Nichrome. D) Tungsten. Show Answer Correct Answer: C) Nichrome. 14. Can we magnetise an iron object with electromagnet A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 15. The Element Of An Electric Iron Is Made Of: A) Iron. B) Nickel. C) Nichrome. D) Tungsten. Show Answer Correct Answer: C) Nichrome. 16. Radhika wants to electroplate a plate with ZINC. She has a Zinc bar and the plate. But she does not know which should be the anode and which should be the cathode. A) Zinc Bar-Anode, Plate-Cathode. B) Zinc Bar-Cathode, Plate-Anode. C) Both Anode and Cathode should be Zinc. D) None of the above. Show Answer Correct Answer: A) Zinc Bar-Anode, Plate-Cathode. 17. What is a cation's charge? A) Positive. B) Negative. C) Neutral. D) Depends on the element. Show Answer Correct Answer: A) Positive. 18. Who invented MAGNETIC EFFECT OF ELECTRIC CURRENT? A) Hans Zimmer. B) Hans Christian Oersted. C) Hans Christian Andersen. D) None of the above. Show Answer Correct Answer: B) Hans Christian Oersted. 19. A combination of two of more cells is known as A) Battery. B) Button cell. C) Electric cell. D) Filament. Show Answer Correct Answer: A) Battery. 20. The direction of current flow is taken from A) Negative to positive terminal. B) Positive to negative terminal. C) Both. D) None of the above. Show Answer Correct Answer: B) Positive to negative terminal. 21. Which of the following statements is incorrect about the conductivity of water? A) Rain water is a good conductor of electricity. B) On addition of table salt, water conducts electricity. C) On addition of lemon juice, water conducts electricity. D) Tap Water is a bad conductor of electricity. Show Answer Correct Answer: D) Tap Water is a bad conductor of electricity. 22. What happens when an electric current is passed through an electrolyte? A) Physical reaction takes place. B) Biological reaction takes place. C) Chemical reaction takes place. D) No reaction takes place. Show Answer Correct Answer: C) Chemical reaction takes place. 23. Choose The Combination Of Correct Answer From The Following: A) Circuit is open and no current flows through it. B) Current flows after sometime. C) Circuit starting from positive terminal of the cell stops at the switch and circuit is open. D) All are correct. Show Answer Correct Answer: A) Circuit is open and no current flows through it. 24. Identify the best conductor of electricity. A) Gold. B) Silver. C) Aluminum. D) Copper. Show Answer Correct Answer: D) Copper. 25. Which mark is present on electric appliances to ensure their safety? A) MCB. B) Fssai. C) ECB. D) ISI. Show Answer Correct Answer: D) ISI. ← 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 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books