Home Physics Electromagnetic Induction Test Online Preparation Mcqs

Physics Electromagnetic Induction Test Online Preparation Mcqs

Physics Electromagnetic Induction Test Online Preparation Mcqs With Answers Start Below

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Question 1 of 15

1. The output voltage of a transformer is 3 times the input voltage then turns ratio will be ________.
A.
B.
C.
D.

Question 1 of 15

Question 2 of 15

2. If the secondary coil has Ns turns and the primary Np turns, the relation between secondary and primary voltages is given by ________.
A.
B.
C.
D.

Question 2 of 15

Question 3 of 15

3. The answer to which question will distinguish between magnetic and non magnetic materials
A.
B.
C.
D.

Question 3 of 15

Question 4 of 15

4. For long distance transmission, the transformer used is _____
A.
B.
C.
D.

Question 4 of 15

Question 5 of 15

5. A coil of wire is arranged with its plane perpendicular to a uniform magnetic field of flux density B. when the radius of the coil increases from r1 to r2 in time ∆t, then what is the emf induced in the coil?
A.
B.
C.
D.

Question 5 of 15

Question 6 of 15

6. A.C cannot be used for ________
A.
B.
C.
D.

Question 6 of 15

Question 7 of 15

7. If the coil is wound on an iron core, the flux through it will ________
A.
B.
C.
D.

Question 7 of 15

Question 8 of 15

8. Energy stored in a magnetic field is given by:
A.
B.
C.
D.

Question 8 of 15

Question 9 of 15

9. Emf induced in a circuit according to Faraday’s law depends on the
A.
B.
C.
D.

Question 9 of 15

Question 10 of 15

10. The alternating current has frequency of 106 Hz, in such a way that time period for completion of cycle is _________.
A.
B.
C.
D.

Question 10 of 15

Question 11 of 15

11. The emf induced in a conductor of unit length moving with unit velocity at right angles to a magnetic field is equal to ________.
A.
B.
C.
D.

Question 11 of 15

Question 12 of 15

12. A step up transformer has transformation ratio of 3:2. What is the voltage is secondary if the primary voltage is 30V.
A.
B.
C.
D.

Question 12 of 15

Question 13 of 15

13. A dynamo converts_______
A.
B.
C.
D.

Question 13 of 15

Question 14 of 15

14. Current produce by moving the loop of wire across a magnetic field is called _______
A.
B.
C.
D.

Question 14 of 15

Question 15 of 15

15. The emf induced in a coil by a changing magnetic flux may have unit as _______
A.
B.
C.
D.

Question 15 of 15


 

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