SET 6: Advanced Concepts and Applications of Electromagnetism
Introduction: This set covers advanced topics including transformers, electrical units, applications of electromagnetism in daily life, and miscellaneous concepts from the chapter. Questions test comprehensive understanding of the entire unit.
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📘 SCIENCE
PHYSICS | Magnetic Effects of Electric Current-F
📝 Questions: 50
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Q1. An electric generator converts:
Q2. The split ring in an electric motor acts as a:
Q3. A solenoid behaves like a:
Q4. Materials that offer very low resistance to electric current are called:
Q5. An induced current exists only when there is:
Q6. The force on a current-carrying conductor placed in a magnetic field is maximum when the conductor is:
Q7. An AC generator produces current that:
Q8. The magnetic field at the centre of a long circular coil carrying current consists of:
Q9. An electric short circuit occurs when:
Q10. When a bar magnet is pushed into a coil connected to a galvanometer, the galvanometer shows:
Q11. A DC generator uses which device to obtain unidirectional current?
Q12. An electric generator works on the principle of:
Q13. The unit of capacitance is:
Q14. An electron beam moving forward is deflected to the right. The magnetic field is directed:
Q15. Electric power is transmitted over long distances using AC because:
Q16. Voltage is also known as:
Q17. Increasing the number of turns in a coil increases the:
Q18. A fuse wire should have:
Q19. The SI unit of electric current is:
Q20. A transformer is a device used to:
Q21. An electric motor converts:
Q22. The magnetic field inside a solenoid is:
Q23. The role of neutral wire in domestic circuits is to:
Q24. The rule used to find the direction of induced current in a rotating coil is:
Q25. The axle in an electric motor helps to:
Q26. The magnetic field is strongest where field lines are:
Q27. A wire with green insulation in domestic wiring is the:
Q28. Fleming's left-hand rule is used to determine the direction of:
Q29. When a bar magnet is held stationary inside a coil, the galvanometer shows:
Q30. The scattering of light by colloidal particles is called:
Q31. AC supply in India has a frequency of:
Q32. A galvanometer is mainly used to detect:
Q33. Current is induced in coil B when current in nearby coil A changes because of:
Q34. An ammeter is used to measure:
Q35. Which of the following devices uses an electric motor?
Q36. The earth wire is necessary in domestic appliances to:
Q37. The direction of magnetic field is given by the direction in which the north pole of a compass moves:
Q38. The magnetic field around a straight current-carrying wire consists of:
Q39. Magnetic field lines never intersect because:
Q40. Brushes in an electric generator are used to:
Q41. Materials that do not allow electric current to flow are called:
Q42. A soft iron core is used in electromagnets because it:
Q43. Which of the following is NOT a source of magnetic field?
Q44. One ohm is defined as the resistance when:
Q45. A current-carrying conductor placed in a magnetic field experiences a force because of interaction between:
Q46. The study of electricity and magnetism together is called:
Q47. The rule used to find the direction of magnetic field around a straight current-carrying conductor is:
Q48. A device that converts electrical energy into sound energy is:
Q49. The phenomenon used in generators was discovered by:
Q50. The direction of conventional current is taken as:
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