Punjab 12th Class Physics Chapter 4 Electromagnetic Induction Mcqs Test Online
Questions 9
Total Marks 18
Time 9 Mins
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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. Step-up transformer has a transformation ratio of 3.2. What is the voltage in secondary, if voltage in primary is 30 V?
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Question 1 of 9

Question 2 of 9

2. 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:

Physics 4.01
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Question 2 of 9

Question 3 of 9

3. Eddy current is produced when:
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Question 3 of 9

Question 4 of 9

4. 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?
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Question 4 of 9

Question 5 of 9

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

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Question 5 of 9

Question 6 of 9

6. The device in which induced emf is statically induced emf is:
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Question 6 of 9

Question 7 of 9

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

Question 8 of 9

Question 9 of 9

9. Which of the following quantities remain constant in step up transformer?
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Question 9 of 9


 

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