This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 10 Electric Current And Its Effects – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 10 Electric Current And Its Effects Quiz 7 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. ..... causes the Coriolis Effect A) Earth's rotation. B) Gravity. C) Wind. D) Density. Show Answer Correct Answer: A) Earth's rotation. 2. The amount of charge that flows through a component in 5 minutes is 600 C. What is the current through the component? A) 0.5 A. B) 2 A. C) 120 A. D) 3000 A. Show Answer Correct Answer: B) 2 A. 3. Sugar solution is a good conductor of electricity A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 4. Which of the following characteristics of electrons determines the current in a conductor? A) Drift velocity alone. B) Thermal velocity alone. C) Both A and B. D) Neither A nor B. Show Answer Correct Answer: A) Drift velocity alone. 5. Force per unit length is called ..... A) Volume. B) Speed. C) Velocity. D) Density. Show Answer Correct Answer: D) Density. 6. Electric Bell works on the principle of- A) Magnetism. B) Electromagnetism. C) Gravitation. D) Static Electricity. Show Answer Correct Answer: B) Electromagnetism. 7. Which of the following appliances does not use an electromagnet? A) Washing machine. B) Refrigerator. C) Electric heater. D) Electric bell. Show Answer Correct Answer: C) Electric heater. 8. A fuse wire is made up of alloy A) Nichrome. B) Tin-lead. C) Mannan. D) Constantan. Show Answer Correct Answer: B) Tin-lead. 9. The electrode that contains the item to be electroplated A) Anode. B) Cathode. C) All the above. D) None of the above. Show Answer Correct Answer: B) Cathode. 10. ..... was the first person who noticed the deflection of compass needle every time the current was passed through the wire. A) Stephen Hawking. B) Albert Einstein. C) Thomas Alva Edison. D) Hans Christian Oersted. Show Answer Correct Answer: D) Hans Christian Oersted. 11. Does the compass needle show deflection of tap water A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 12. The electrode connected to the positive terminal of the battery is called A) Anode. B) Cathode. C) All the above. D) None of the above. Show Answer Correct Answer: A) Anode. 13. Electrical energy is converted to ..... energy in a hair dryer. A) Heat. B) Light. C) All the above. D) None of the above. Show Answer Correct Answer: A) Heat. 14. Smaller bodies of salt water are called A) Seas. B) Lakes. C) Oceans. D) Rivers. Show Answer Correct Answer: A) Seas. 15. Current is expressd in Ampere ..... A) I. B) A. C) V. D) R. Show Answer Correct Answer: B) A. 16. What are electrons in electric circuit A) Charge carriers. B) Flowing particles which form electric current. C) Misconception. D) Electric current pushers. Show Answer Correct Answer: A) Charge carriers. 17. Good insulators are ..... resistors A) Good. B) Bad. C) All the above. D) None of the above. Show Answer Correct Answer: A) Good. 18. Will distilled water conduct electricity? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 19. Tungsten is used for the manufacture of an electric bulb because A) It is malleable. B) It is inexpensive. C) It has a very high melting point. D) It is a good conductor. Show Answer Correct Answer: C) It has a very high melting point. 20. When the strength of the current flowing through a coil is increased, which of the following statements is true for it? A) Strength of the magnetic field decreases. B) Strength of the magnetic field increases. C) Amount of heat generated due to resistance decreases. D) Strength of the magnetic field remains constant. Show Answer Correct Answer: B) Strength of the magnetic field increases. 21. The passage of an electric current through a conducting solution causes ..... A) Physical reaction. B) Biological reaction. C) Chemical reaction. D) All of the above. Show Answer Correct Answer: C) Chemical reaction. 22. Which part of the electric bell gets attracted towards the electromagnet A) Hammer. B) Gong. C) Iron Strip. D) Rod. Show Answer Correct Answer: A) Hammer. 23. The longer thinner line in the symbol of a cell denotes A) The positive terminal. B) The negative terminal. C) The direction of current. D) None of these. Show Answer Correct Answer: A) The positive terminal. 24. What word best fits this definition:A device which converts electrical energy into mechanical energy usually through the rotation of an electromagnet in the field of a stationary magnet. A) Armature. B) System. C) Motor. D) Electromagnet. Show Answer Correct Answer: C) Motor. 25. The phenomenon of decomposition of an electrolyte when electricity is passed through is known as A) Conduction. B) Coating. C) Electrolysis. D) Electrorefining. Show Answer Correct Answer: C) Electrolysis. ← 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 8Class 7 Science Chapter 10 Electric Current And Its Effects Quiz 9Class 7 Science Chapter 10 Electric Current And Its Effects Quiz 10Class 7 Science Chapter 10 Electric Current And Its Effects Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books