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.

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Time: 30 Minutes for 20 Question.

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12th Physics: Current Electricity

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1. Choose the correct option
Assertion : Kirchoff¢s junction rule follows fromconservation of charge.
Reason : Kirchoff¢s loop rule follows from conservation of momentum

If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.

If Assertion is correct but Reason is incorrect.

If both the Assertion and Reason are incorrect.

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2. Which of the following is used for the formation of thermistor?

Copper oxide

Nickel oxide

Iron oxide

All of the above

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3. The Kirchhoff's second law (ΣiR : ΣE), where the symbols have their usual meanings, is based on

conservation of momentum

conservation of charge

conservation of potential

conservation of energy

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4. A current passes through a resistor. If K₁ and K₂ represent the average kinetic energy of the conduction electrons and the metal ions respectively then

K₁ < K₂

K₁ : K₂

K₁ > K₂

any of these three may occur

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5. Two or more resistors are said to be in ...A... if one end of all resistors is joined together and similarly the other ends joined together, Here, A refers to

series

parallel

either (a) or (b)

None of these

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6. 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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7. In potentiometer a balance point is obtained, when

the e.m.f. of the battery becomes equal to the e.m.f of the experimental cell

the p.d. of the wire between the +ve end of battery to jockey becomes equal to the e.m.f. of the experimental cell

the p.d. of the wire between +ve point of cell and jockey becomes equal to the e.m.f. of the battery

the p.d. across the potentiometer wire becomes equal to the e.m.f. of the battery

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8. Potentiometer measures potential more accurately because

it measures potential in open circuit

it uses sensitive galvanometer for null deflection

it uses high resistance potentiometer wire

it measures potential in closed circuit

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9. A potentiometer is an accurate and versatile device to make electrical measurements of E.M.F. because the method involves

Potential gradients

A condition of no current flow through the galvanometer

A combination of cells, galvanometer and resistances

Cells

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Chapter wise quiz of XII class physics

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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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