Current Electricity MCQ Questions and Answers for Practice

Current Electricity MCQs are essential practice tools for students and exam aspirants. These multiple-choice questions help reinforce key concepts and prepare you for various assessments and competitive exams.

About Current Electricity MCQ Questions

Current Electricity MCQs cover fundamental concepts such as electric current, resistance, Ohm's Law, and Kirchhoff's Laws. They also delve into practical applications and problem-solving techniques, ensuring a comprehensive understanding of the subject.

Why Practice Current Electricity Objective Questions?

Practicing Current Electricity MCQs offers several benefits. They help in reinforcing your understanding of key concepts, preparing for school and college exams, and enhancing your problem-solving skills. They are also useful for competitive exams and job interviews, where a strong grasp of electrical principles is crucial.

Who Should Use These MCQs?

  • Students preparing for school or college exams
  • Competitive exam aspirants
  • Candidates preparing for interviews

Current Electricity MCQ Questions for Practice

1. If a power of 100 watt is being supplied across a potential difference of 200 V, current flowing is

2. A 5A fuse wire can with stand a maximum power of 1W in circuit. The resistance of the fuse wire is:

3. A carbon resistance is having a following coding green, orange, black, gold. The resistance of resistor is

4. A cell of emf E is connected with an external resistance R, then p.d. across cell is V. The internal resistance of cell will be

5. A steady current flows in a metallic conductor of non-uniform cross-section. The quantities/quantity constant along the length of the conductor is/are

6. A uniform w ire connected across a supply produces heat H per second. If wire is cut into three equal parts and all the parts are connected in parallel across the same supply, the heat produced per second will be :

7. A wire of resistance 3 Ω is cut into three pieces, which are then joined to form a triangle. The equivalent resistance between any corners of the triangle is :

8. An electric heater is connected to the voltage supply. After few seconds, current gets its steady value then its initial current will be

9. An electric heating element consumes 500 W, when connected to a 100 V line. If the line voltage becomes 150 V, the power consumed Will be:

10. At what temperature will the resistance of a copper wire become three times its value at 00C? (Temperature coefficient of resistance for copper = 4 x 10-3 peroC)

11. By increasing the temperature, the specific resistance of a conductor and semiconductor

12. Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10 ? when a potential difference of 20 V is applied between its ends

13. For a metallic wire, the ratio V/i (V = the applied potential difference, i = current flowing) is

14. If a certain piece of copper is to be shaped into a conductor of minimum resistance, its length (L) and cross-sectional area shall respectively be :

15. If n cells each of emf e and internal resistance r are connected in parallel, then the total emf and internal resistance will be

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