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Class 12 Physics - Chapter 3: Current Electricity MCQ Questions

10 Questions 20 Minutes
Answered: 0 / 10Unanswered: 10

Your Class 12 Physics Study Path

  1. 1LearnNCERT Solutions
  2. 2PracticeChapter MCQs
  3. 3TestChapter Test
  4. 4PrepareSample Papers
  5. 5Exam PracticePrevious-Year Papers
  6. 6Final CheckMock Test
Question 1

MCQ Questions for Class 12 Physics Chapter 3 Current Electricity with Answers 2

Question 2

Which of the following characteristics of electrons determines the current in a conductor?

Question 3

A potentiometer wire is 100 cm long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at 50 cm and 10 cm from the positive end of the wire in the two cases. The ratio of emfs is

Question 4

A resistance R is to be measured using a meter bridge. A student chooses the standard resistance S to be 100 Ω. He finds the null point at l1 = 2.9 cm. He is told to attempt to improve the accuracy. Which of the following is a useful way?

Question 5

The temperature co-efficient of resistance of a wire is 0.00125 °C-1. At 300 K its resistance is 1 Ω. The resistance of the wire will be 2 Ω at

Question 6

MCQ Questions for Class 12 Physics Chapter 3 Current Electricity with Answers 3

Question 7

Masses of three wires are in the ratio 1 : 3 : 5 and their lengths are in the ratio 5 : 3 : 1. The ratio of their electrical resistance is

Question 8

MCQ Questions for Class 12 Physics Chapter 3 Current Electricity with Answers 1

Question 9

Kirchhoff’s junction rule is a reflection of

Question 10

Two cells of emfs approximately 5 V and 10 V are to be accurately compared using a potentiometer of length 400 cm.

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