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

# 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)

 MCQs

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

Question 1 of 9

## Physics

1. 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 1 of 9

Question 2 of 9

2. 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 2 of 9

Question 3 of 9

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

Question 3 of 9

Question 4 of 9

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

Question 4 of 9

Question 5 of 9

5. 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 5 of 9

Question 6 of 9

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

Question 6 of 9

Question 7 of 9

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

Question 7 of 9

Question 8 of 9

8. 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 8 of 9

Question 9 of 9

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

1.
2.
3.
4.

Question 9 of 9

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