This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Physics Part I > Class 12 Physics (Part I) Chapter 3 Current Electricity – Quiz 19 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 19 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How much resistance does a heavy duty flashlight have if it has a current of 25 mA flowing through it and is beingpowered by four 1.5 V cells? A) 1.5$\Omega$. B) 150$\Omega$. C) 15$\Omega$. D) 0.15$\Omega$. Show Answer Correct Answer: D) 0.15$\Omega$. 2. This states that the current flowing in a circuit is directly proportional to the applied potential difference and inversely proportional to the resistance in the circuit. A) Kepler's Law. B) Thermodynamics Law. C) Law of gravity. D) Ohm's Law. Show Answer Correct Answer: D) Ohm's Law. 3. The power source that pushes electricity around a circuit A) Switch. B) Battery. C) Light bulb. D) Wire. Show Answer Correct Answer: B) Battery. 4. The amount of energy used to move one coulomb of electrons through the circuit is its A) Device. B) Voltage. C) Circuit. D) None of the above. Show Answer Correct Answer: B) Voltage. 5. Two resistance filaments of samen length are connected first in series and then in parrallel.Find the power dsipation in both cases assumming equal current flows inmain circuit A) 1:4. B) 2:1. C) 1:2. D) 4:1. Show Answer Correct Answer: D) 4:1. 6. Where is electrical energy made? A) Factories. B) Power plants. C) Schools. D) None of the above. Show Answer Correct Answer: B) Power plants. 7. The conductance of a conductor of resistance 2 milli ohm A) 500 Siemen. B) 50 Siemen. C) 0.5 Siemen. D) 5 Siemen. Show Answer Correct Answer: A) 500 Siemen. 8. The best phrase to describe static electricity is A) Circuit charges. B) Current charges. C) Balanced charges. D) Unbalanced charges. Show Answer Correct Answer: D) Unbalanced charges. 9. This force occurs when there is an attractive and repulsive force between two poles. A) Magnetic. B) Electric. C) Electromagnetism. D) None of the above. Show Answer Correct Answer: A) Magnetic. 10. When two magnetic North poles are brought close to each other, they will A) Cancel each other out. B) Create sparks. C) Attract. D) Repel. Show Answer Correct Answer: D) Repel. 11. Fill in the blank:A ..... is a controlled path through which an electric current passes. A) Discharge. B) Circuit. C) Current. D) Volt. Show Answer Correct Answer: B) Circuit. 12. Energy transformations occur when current flows through a circuit that has ..... ..... A) Electric resistance. B) Voltage. C) Electric current. D) Coulomb. Show Answer Correct Answer: A) Electric resistance. 13. To Produce 10$^{3}$joule of heat in 10seconds, how much voltage should be applied to 100ohm resistance A) 100volt. B) 20volt. C) 200volt. D) 50volt. Show Answer Correct Answer: A) 100volt. 14. Among the following which has low temperature co efficient of resistance? A) Aluminium. B) Silver. C) Constantan. D) Copper. Show Answer Correct Answer: C) Constantan. 15. Which of the following always has a negative charge? A) A proton. B) An electron. C) A battery. D) All of the above. Show Answer Correct Answer: B) An electron. 16. What type of current is produced in a battery A) Magnetic. B) Alternating. C) Induced. D) Direct. Show Answer Correct Answer: D) Direct. 17. Matter is the ability to do work A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 18. Which of the following is true about electrical circuits? A) They have to involve a wire made of insulating material. B) Every circuit needs to have a switch that can stop and start the flow of electricity. C) An open circuit works as long as the wire connects a bulb to the positive end of a battery. D) Electricity can only flow if the circuit is a closed loop. Show Answer Correct Answer: D) Electricity can only flow if the circuit is a closed loop. 19. The work done to bring unit positive charge from infinity to a point in an electric field is known as ..... A) Potential. B) Charge. C) Resistance. D) Current. Show Answer Correct Answer: A) Potential. 20. Energy E is stored in paralle plate capacitor C1. An identical uncharged capacitor C2 is connected to it, kept in contact with it for a while and then disconnected, the energy stored in C2 is A) E/3. B) Zero. C) E/4. D) E/2. Show Answer Correct Answer: C) E/4. 21. The flow of electric charges is A) Voltage. B) Resistance. C) Current. D) Electricity. Show Answer Correct Answer: D) Electricity. 22. All electricity is the result of electrical charge. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 23. What is the term for a substance with zero resistance at very low temperatures? A) Conductor. B) Insulator. C) Resistor. D) Superconductor. Show Answer Correct Answer: D) Superconductor. 24. A circuit that is not connected is called what kind of circuit? A) Closed. B) Parallel. C) Series. D) Open. Show Answer Correct Answer: D) Open. 25. The symbol for current is ..... and the unit is ..... A) C, Ohms. B) I, Amps. C) C, Amps. D) I, Volts. Show Answer Correct Answer: B) I, Amps. 26. The south end of a bar magnet attracts to the A) North end of a bar magnet. B) South end of a bar magnet. C) All the above. D) None of the above. Show Answer Correct Answer: A) North end of a bar magnet. 27. Jordan rubs her socks along the wool carpet as she walks across her house. She grabs onto a metal door knob. What will most likely happen as she touches the door knob? A) The charge will disappear. B) She will get a light shock. C) The chair will repel her. D) She will build up more charge. Show Answer Correct Answer: B) She will get a light shock. 28. The path from the battery through the wire and light bulb and back to the battery is a COMPLETE or CLOSED circuit. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 29. N number of identical resistors first connected in series then in parallel. Ratio of equivalent resistance of series and parallel combination is- A) N. B) 1/n2. C) 1/n. D) N$^{2}$. Show Answer Correct Answer: D) N$^{2}$. 30. A car battery has an emf of 12V and an internal resistance of 0.005$\Omega$. The terminal voltage when a load current of 100A is drawn is ..... A) 11.5V. B) 0.5V. C) 7.0V. D) 11.5A. Show Answer Correct Answer: A) 11.5V. 31. When all parts of the circuit are connected it is a ..... circuit. A) Open. B) Closed. C) All the above. D) None of the above. Show Answer Correct Answer: B) Closed. 32. If a battery produces 12.6 Volts, what would be the current for a 6 Ohm resistor? A) 2.1 Amps. B) 75.6 Amps. C) 15 Amps. D) 0.5 Amps. Show Answer Correct Answer: A) 2.1 Amps. 33. In a parallel cricuit, how much voltage do two bulbs have if the battery has 6 volt A) Each one will have-3 volts. B) Both of them will have-6 volts. C) One of them is have-2 volts while the other has-4 volts. D) There is no volts in either bulbs. Show Answer Correct Answer: B) Both of them will have-6 volts. 34. Two objects with LIKE static charges will A) Repel each other. B) Attract each other. C) Cause a spark. D) Even out in the end. Show Answer Correct Answer: A) Repel each other. 35. Which of the following could be used as the strongest rod of an electromagnet? A) Drinking straw. B) Iron nail. C) Pencil. D) Aluminum foil. Show Answer Correct Answer: B) Iron nail. 36. How does resistance affect current? A) Resistance does not affect current. B) Less resistance-less current. C) More resistance-less current. D) More resistance-more current. Show Answer Correct Answer: C) More resistance-less current. 37. A 47K ohm resistor would have which colors on its first three bands? A) Yellow, Violet, White. B) Red, White, Blue. C) Yellow, Violet, Orange. D) Orange, Yellow, Violet. Show Answer Correct Answer: C) Yellow, Violet, Orange. 38. What is 32000000 in standard form? A) $3.2\times10^7$. B) $32000000\times10^7$. C) $32\times10^6$. D) $3.2\times10^6$. Show Answer Correct Answer: A) $3.2\times10^7$. 39. Where is alternating current commonly used? A) In car batteries. B) In solar panels. C) In homes. D) None of the above. Show Answer Correct Answer: C) In homes. 40. Turning on a lamp and getting shocked when jumping on a trampoline are both examples of ..... A) Electricity. B) Naturally Occurring Electricity. C) Static Electricity. D) Current Electricity. E) Human Harnessed Electricity. Show Answer Correct Answer: A) Electricity. 41. What is the S.I unit for resistance? A) Ampere. B) Volt. C) Ohm. D) Joules. Show Answer Correct Answer: C) Ohm. 42. Something that allows electricity to move easily through it A) Closed switch. B) Insulator. C) Conductor. D) Source. Show Answer Correct Answer: C) Conductor. 43. A current of 3 A flows through a conductor for 10 s. What amount of charge passes through the conductor? A) 30 C. B) 30 A. C) 3.33 C. D) 3.33 A. Show Answer Correct Answer: A) 30 C. 44. If one of the light bulb in series circuit is taken off, what will happen to the other light bulb? A) The other light bulb will be on. B) The other light bulb will be off. C) The other light bulb will stay on. D) Both light bulb will be on. Show Answer Correct Answer: B) The other light bulb will be off. 45. The internal resistance of the cell A) Always acts in the cell in open circuit. B) Acts only in closed circuit and it reduces the EMF. C) Acts only in the closed circuit and it reduces the current. D) None of these. Show Answer Correct Answer: C) Acts only in the closed circuit and it reduces the current. 46. Kirchoff's first and second laws of electric circuits are consequences of A) Conservation of energy and electric charges respectively. B) Conservation of energy. C) Conservation of electric charge and energy respectively. D) Conservation of electric charge. Show Answer Correct Answer: C) Conservation of electric charge and energy respectively. 47. How many Volts would we need to produce a current flow of 8 Amps through a 6 Ohm resistor A) 48 volts. B) 24 volts. C) 12 volts. D) 1.3333. Show Answer Correct Answer: A) 48 volts. 48. A metallic wire of resistance 12 ohm is bent to form a square. The resistance between the two diagonal points would be A) 24 ohm. B) 3 ohm. C) 12 ohm. D) 6 ohm. Show Answer Correct Answer: B) 3 ohm. 49. Identify the easiest way to reduce static build up on an object A) Add a ground wire to discharge any charge. B) Keep the object touching an insulator. C) Take out all the conducting material. D) Rub the object with an insulator. Show Answer Correct Answer: A) Add a ground wire to discharge any charge. 50. 1 ampere of current is defined as ..... A) One coulomb of charge passing through the surface area in one second. B) One coulomb of current passing through the surface area in one second. C) One coulomb of charge passing through the conductor in one second. D) One coulomb of currrent passing through the conductor in one second. Show Answer Correct Answer: A) One coulomb of charge passing through the surface area in one second. 51. In a series cricuit, what are the amps of the wires if the battery has 1 amps? A) The wires have none. B) Each wire has 1/2. C) Each of the wires will get 1/4. D) All the wires have 1 amps each. Show Answer Correct Answer: D) All the wires have 1 amps each. 52. The Potential difference between the two electrodes of the lead-acid cell is nearly ..... A) 1.2 V. B) 1.5 V. C) 2 V. D) 1 V. Show Answer Correct Answer: C) 2 V. 53. I am the path along which electricity travels. A) Fuse. B) Electric circuit. C) Conductor. D) Insulator. Show Answer Correct Answer: B) Electric circuit. 54. Two identical batteries, each with an emf of 18 V and an internal resistance of 1 $\Omega$, are wired in parallel by connecting their positive terminals together and connecting their negative terminals together. The combination is then wired across a 4-$\Omega$ resistor. The current in each battery is: A) 3.6 A. B) 2.0 A. C) 1.0 A. D) 4.0 A. Show Answer Correct Answer: B) 2.0 A. 55. Copper is a good conductor of electricity. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 56. Surrounding every magnet is a(n) ..... ..... A) Magnetic field. B) Electrical current. C) Smaller magnet. D) Funny saying. Show Answer Correct Answer: A) Magnetic field. 57. Which of the following is an example of a source of human-harnessed (current) electricity? A) Getting a shock from a doorknob. B) A hydroelectric dam. C) Socks from the dryer sticking together. D) Lightning striking a building. Show Answer Correct Answer: B) A hydroelectric dam. 58. Which instrument is used for measuring electric potential? A) Galvanometer. B) Ammeter. C) Voltmeter. D) Potentiometer. Show Answer Correct Answer: C) Voltmeter. 59. Electricity can flow through graphite. Graphite is therefore a(n) A) Conductor. B) Insulator. C) Electron. D) Conductor and insulator. Show Answer Correct Answer: A) Conductor. 60. An electric iron draws a current 4 A when connected to a 220 V mains. Its resistance must be A) 1000 $\Omega$. B) 55 $\Omega$. C) 44 $\Omega$. D) None of these. Show Answer Correct Answer: B) 55 $\Omega$. ← PreviousNext →Related QuizzesScience QuizzesClass 12 QuizzesClass 12 Physics (Part I) Chapter 3 Current Electricity Quiz 1Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 2Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 3Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 4Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 5Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 6Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 7Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books