Class 12 Physics Chapter Current Electricity Free MCQ Test Quiz

#FreeQuiz #PhysicsQuiz As physics can be a challenging subject, it is important to have a comprehensive understanding of each topic. The Current Electricity Free Test Quiz offers Class 12 students a unique online platform to revise and test their knowledge on Chapter – Current Electricity. This platform incorporates multiple-choice questions (MCQs) designed explicitly to align with the curriculum and the specificities of the chapter. With the current electricity class 12 MCQ online test, students can study at their own pace, enhancing their understanding and analytical skills.

Check Class 12th Physics Current Electricity Knowledge

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Time: 30 Minutes for 20 Question.

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12th Physics: Current Electricity

1 / 9

1. In a wheatstone bridge in the battery and galvanometer are interchanged then the deflection in galvanometer will

change in previous direction

not change

change in opposite direction

none of these.

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2 / 9

2. Ten identical cells connected in series are needed to heat a wire of length one meter and radius ‘r’ by 10ºC in time ‘t’. How many cells will be required to heat the wire of length two meter of the same radius by the same temperature in time ‘t’?

10

20

30

40

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3 / 9

3. In the experiment of potentiometer, at balance point, there is no current in the

main circuit

galvanometer circuit

potentiometer circuit

both main and galvanometer circuits

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4 / 9

4. To draw a maximum current from a combination of cells, how should the cells be grouped?

Parallel

Series

Mixed grouping

Depends upon the relative values of internal and external resistances.

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5 / 9

5. What is the suitable material for electric fuse?

Cu

Constantan

Tin-lead alloy

Nichrome

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6 / 9

6. A metal wire is subjected to a constant potential difference. When the temperature of the metal wire increases, the drift velocity of the electron in it

increases, thermal velocity of the electron increases

decreases, thermal velocity of the electron increases

increases, thermal velocity of the electron decreases

decreases, thermal velocity of the electron decreases

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7 / 9

7. An Aluminium (Al) rod with area of cross-section 4 × 10^–6 m² has a current of 5 ampere. Flowing through it. Find the drift velocity of electron in the rod. Density of Al : 2.7 × 10³ kg/m³ and Atomic wt. : 27. Assume that each Al atom provides one electron

8.6 × 10^–4 m/s

1.29 × 10^–4 m/s

2.8 × 10^–2 m/s

3.8 × 10^–3 m/s

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8 / 9

8. The electric resistance of a certain wire of iron is R. If its length and radius are both doubled, then

the resistance and the specific resistance, will both remain unchanged

the resistance will be doubled and the specific resistance will be halved

the resistance will be halved and the specific resistance will remain unchanged

the resistance will be halved and the specific resistance will be doubled

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9 / 9

9. When potential difference is applied across an electrolyte, then Ohm’s law is obeyed at

zero potential '

very low potential

negative potential

high potential

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Chapter wise quiz of XII class physics

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In conclusion, the Class 12 Physics Chapter 3 Current Electricity Free Test Quiz offers a comprehensive learning and practice platform. By incorporating a range of features and resources, this platform can boost students’ confidence, enhance their understanding, and prepare them effectively for their exams.

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Mohit Sinha

I’m Mohit Sinha! With a Master’s degree in Physics, I bring a deep understanding of the subject to my teaching. I specialize in guiding students through the complexities of Physics for 11th and 12th grades and also offer English instruction from 1st to 12th grade. When I'm not in the classroom, I'm passionate about creating engaging educational content for QuizRanker.org, where I help make learning both fun and effective.

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