This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 3 Current Electricity – Quiz 15 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 15 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which device is used to measure electric current? A) Voltmeter. B) Ammeter. C) Ohmmeter. D) Thermometer. Show Answer Correct Answer: B) Ammeter. 2. How much time is required for an operating 60-watt light bulb to use 120 joules of electrical energy? A) 2 sec. B) .2 sec. C) .5 sec. D) 5 sec. Show Answer Correct Answer: A) 2 sec. 3. In transferring 5 C charge through a wire, 25 J of work is done. Find the potential difference across the wire. A) 5 V. B) 0.2 V. C) 125 V. D) None of the above. Show Answer Correct Answer: A) 5 V. 4. The relationship between electricity and magnetism is called A) Electrical energy. B) Induced current. C) Electromagnetism. D) Ferromagnetism. Show Answer Correct Answer: C) Electromagnetism. 5. A voltmeter is connected in A) Series. B) Parallel. C) All the above. D) None of the above. Show Answer Correct Answer: B) Parallel. 6. What happens to the total current in a series circuit if one component fails? A) The total current drops to zero. B) The total current increases significantly. C) The total current remains the same. D) The total current fluctuates randomly. Show Answer Correct Answer: A) The total current drops to zero. 7. Vincent is listing the ways that he could increase the magnetic field of the solenoid he made. Which of the following can he add to his list? A) Increasing the number of loops. B) Spacing the loops farther apart. C) Decreasing the current. D) Adding an insulating core. Show Answer Correct Answer: A) Increasing the number of loops. 8. The transfer of what type of atomic particle is responsible for the static charges on objects? A) Neutrons. B) Protons. C) Electrons. D) None of these. Show Answer Correct Answer: C) Electrons. 9. Conducts electricity around a circuit A) Wire. B) Insulator. C) Light bulb. D) Switch. Show Answer Correct Answer: A) Wire. 10. Two wires of A and B with circularcross section are made up of the samematerial with equal lengths. SupposeR$_{A }$= 3 R$_{B}$, then what is the ratio ofradius of wire A to that of B? A) 3. B) (3)$^{1/2}$. C) 1/(3)$^{1/2}$. D) 1/3. Show Answer Correct Answer: C) 1/(3)$^{1/2}$. 11. What is a common real-world example of static electricity? A) A light bulb glowing. B) A battery powering a remote. C) Clothes sticking together in a dryer. D) A fan spinning. Show Answer Correct Answer: C) Clothes sticking together in a dryer. 12. What is the unit of current density? A) Ampere. B) Ampere m. C) A m$^{-2}$. D) A m$^{-1}$. Show Answer Correct Answer: C) A m$^{-2}$. 13. What is the main difference between static electricity and current electricity? A) Static electricity is stationary, while current electricity flows. B) Static electricity flows, while current electricity is stationary. C) Both are stationary forms of electricity. D) Both are flowing forms of electricity. Show Answer Correct Answer: A) Static electricity is stationary, while current electricity flows. 14. If resistance of a circuit is tripled, and the voltage stays the same, the current will ..... A) Double. B) Decrease by one third. C) Triple. D) Not change. Show Answer Correct Answer: B) Decrease by one third. 15. Two type of charges in electric and magnetic forces are A) North and south. B) East and west. C) Positive and negative. D) Beyonce. Show Answer Correct Answer: C) Positive and negative. 16. The p.d across a component is 1 V and the current that flows through it is 1 A. What is its resistance? A) 1 $\Omega$. B) 0.5 $\Omega$. C) 2 $\Omega$. D) 10 $\Omega$. Show Answer Correct Answer: A) 1 $\Omega$. 17. Fuse wire has A) High melting point. B) Low melting point. C) High boiling point. D) Low boiling point. Show Answer Correct Answer: B) Low melting point. 18. What is the effect of increasing the length of a conductor on its resistance? A) Increases resistance. B) Decreases resistance. C) No effect. D) Doubles resistance. Show Answer Correct Answer: A) Increases resistance. 19. Electrical insulators have ..... resistance to the movement of electrons. A) High. B) Low. C) No. D) None of the above. Show Answer Correct Answer: A) High. 20. An example of the best insulator is A) Copper. B) Salt. C) Plastic. D) Sand. Show Answer Correct Answer: C) Plastic. 21. 10$^{6}$ electrons are moving through a wire per second, the current developed is A) 1.6 x 10$^{-19}$A. B) 1 A. C) 1 .6 X 10$^{-13}$ A. D) 10$^{6}$ A. Show Answer Correct Answer: C) 1 .6 X 10$^{-13}$ A. 22. The study of properties of fluids in motion is called A) Fluids Study. B) Fluids statics. C) Fluids dynamics. D) None. Show Answer Correct Answer: C) Fluids dynamics. 23. What is Ohm's Law and how is it mathematically expressed? A) R = V-I. B) I = V + R. C) Ohm's Law is V = I * R. D) V = R / I. Show Answer Correct Answer: C) Ohm's Law is V = I * R. 24. The terminal potential difference of a battery is less than its emf: A) Under all conditions. B) Only when the battery is being charged. C) Only when the battery is being discharged. D) Only when there is no current in the battery. Show Answer Correct Answer: C) Only when the battery is being discharged. 25. The temperature coefficient ofresistance of a wire is 0.00125 per $^\circ$C.At 20$^\circ$C, its resistance is 1 $\Omega$. Theresistance of the wire will be 2 $\Omega$ at A) 800 $^\circ$C. B) 700 $^\circ$C. C) 850 $^\circ$C. D) 820 $^\circ$C. Show Answer Correct Answer: D) 820 $^\circ$C. ← PreviousNext →Related 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 8Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 9Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books