Introduction: This set covers practical applications of electricity, electric power, energy consumption, fuses, and commercial units. These MCQs are essential for understanding real-life applications and energy calculations as per NCERT Class 10 Physics.
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📘 Science
PHYSICS | Electricity-F
📝 Questions: 50
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Q1. An electric bulb produces light due to:
Q2. Electrical energy is supplied by:
Q3. In practical situations, current is calculated using:
Q4. Heating effect of current is unavoidable because electrical energy:
Q5. Fuse wire melts due to:
Q6. Power of a device depends on:
Q7. Fuse wire is made of a metal having:
Q8. A fuse is connected in:
Q9. A refrigerator of 400 W used for 8 h/day for 30 days consumes:
Q10. One kilowatt hour is equal to:
Q11. Kilowatt hour is a unit of:
Q12. The filament of an electric bulb is made of:
Q13. Electric irons and toasters work on:
Q14. Heating effect is undesirable in circuits because it:
Q15. The bulb filament is surrounded by nitrogen or argon to:
Q16. A fuse wire melts when:
Q17. An electric iron consuming 840 W at 220 V draws a current of:
Q18. Commercial unit of electrical energy is:
Q19. Cost of 96 kWh at Rs 3 per unit is:
Q20. Domestic fuses are rated as:
Q21. An electric motor mainly converts electrical energy into:
Q22. Joule's law of heating is applicable when current is:
Q23. Electrons in a circuit are:
Q24. According to Joule's law, heat produced is directly proportional to:
Q25. We pay electricity bills for:
Q26. For a 1 kW iron working at 220 V, the correct fuse rating is:
Q27. Electric power is defined as:
Q28. Electric power is given by:
Q29. Filament of a bulb must have:
Q30. A bulb draws 0.5 A from a 220 V source. Its power is:
Q31. One watt is equal to:
Q32. Using Ohm's law, the heat produced in a resistor is:
Q33. A fuse protects electrical appliances by:
Q34. Heat produced in a resistor is directly proportional to:
Q35. Resistance of the electric iron at maximum heating is:
Q36. When heating is minimum at 360 W and 220 V, current drawn is:
Q37. The study of electricity in this chapter mainly explains:
Q38. The heating effect of current is discussed in:
Q39. A torch bulb is used in experiments to:
Q40. After measuring current, the key should be:
Q41. When the nichrome wire is replaced by a 10 W bulb, the ammeter reading:
Q42. A rheostat is a type of:
Q43. Resistance depends on:
Q44. Current through 10Ω resistor connected to 12V is:
Q45. An electric iron consuming 840 W at 220 V draws a current of:
Q46. Resistance of the iron at minimum heating is:
Q47. Total current in the parallel circuit is:
Q48. The source keeps supplying energy to maintain current because:
Q49. In a series circuit, power consumed by each resistor depends on:
Q50. Three resistors of 5Ω, 10Ω, and 30Ω are connected in parallel to 12V. Current through 5Ω is:
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