Punjab 12th Class Physics Chapter 4 Electromagnetic Induction Mcqs Test Online

Total Question
9 Questions
Total Marks
18 Marks
Total Time
9 Minuts
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Test Name



Ch. 4 # Electromagnetic Induction

Subject



Physics (12th Class)

Test Type



MCQs


Punjab 12th Class Physics Chapter 4 Electromagnetic Induction Mcqs Test Online

Punjab 12th Class Physics Chapter 4 Electromagnetic Induction Mcqs Test Online

 

Question 1 of 9

Physics

1. Which of the following quantities remain constant in step up transformer?
1.
2.
3.
4.

Question 1 of 9

Question 2 of 9

2. For inducing emf in a coil the basic requirement is that:

1.
2.
3.
4.

Question 2 of 9

Question 3 of 9

3. The induced emf in a coil is proportional to:
1.
2.
3.
4.

Question 3 of 9

Question 4 of 9

4. Step-up transformer has a transformation ratio of 3.2. What is the voltage in secondary, if voltage in primary is 30 V?
1.
2.
3.
4.

Question 4 of 9

Question 5 of 9

5. The north pole of a magnet is brought near a metallic ring as shown in the fig. The direction of induced current in the ring will be:

1.
2.
3.
4.

Question 5 of 9

Question 6 of 9

6. The device in which induced emf is statically induced emf is:
1.
2.
3.
4.

Question 6 of 9

Question 7 of 9

7. Eddy current is produced when:
1.
2.
3.
4.

Question 7 of 9

Question 8 of 9

8. What is the coefficient of mutual inductance, when the magnetic flux changes by 2 x 10⁻² Wb, and change in current is 0.01 A?
1.
2.
3.
4.

Question 8 of 9

Question 9 of 9

9. In a coil current change from 2 to 4 A in 0.5 s. If the average induced emf is 8V hen coefficient of self-inductance is:
1.
2.
3.
4.

Question 9 of 9


 

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