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CBSE Physics Electromagnetic Induction Test Online

Test Name Electromagnetic Induction Test
Subject CBSE Physics
Test Type MCQs
Total Question 22
Total Marks 44
Total Time 20 Minutes
Test Help For
  • CBSE Physics.
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Central Board of Secondary Education, CBSE is a Board of Education for public and private schools, under the Union Government of India. They facilitates all exams from Grade 1 to 12th. Physics subject is part of there syllabus. We are discuss about Electromagnetic induction (or sometimes just induction) is a process where a conductor placed in a changing magnetic field or a conductor moving through a stationary magnetic field causes the production of a voltage across the conductor. In this preparation test every one will guide all topics of Physics easily for examinations purposes in all grades. 

CBSE Physics Electromagnetic Induction Test Online

CBSE

1. Two coils have a mutual inductance of 0.005 H. The current changes in the first coil according to equation i = i° sin ωt, i° = 10 A  and ω = 100 π rad/s. The maximum value of emf in the second coil is ?

Question 1 of 15

2. The total charge induced in a conducting loop when it is moved in magnetic field depends on ?

Question 2 of 15

3. A conducting circular loop is placed in a uniform magnetic field 0.04 T with its plane perpendicular to the magnetic field. the radius of the loop starts shrinking at 2 mms-1. The induced emf in the loop when the radius is 2 cm is ?

Question 3 of 15

4. A rectangular coil of 20 turns and area of cross section 25 sq cm has a resistance of 100Ω. If a magnetic field which is perpendicular to the plane of coil changes at a rate of 100 t/s,the current in the coil is ?

Question 4 of 15

5. What is the self-inductance of a coil which produces 5 V when the current changes form 3 A to 2 A  in one millisecond ?

Question 5 of 15

6. In a region  of uniform magnetic induction B = 10-2 T, a circular coil of radius 30 cm and resistance π2 ohm is rotated about an axis which is perpendicular to the direction of B and which forms a diameter of the coil. If the coil rotates at 200 rpm the amplitude of the alternating current induced in the coil is ?

Question 6 of 15

7. Two coils of self-inductance 2 mH and 8 mH are placed so close together that the effective flux in one coil is completely linked with the other. The mutual inductance between theses coils is ?

Question 7 of 15

8. The magnetic flux through a circuit of resistance R changes by an amount ΔΦ in a time Δt. Then the total quantity of electric charge q that passes any point in the circuit during the time Δt is represented by ?

Question 8 of 15

9. A conductor of length 0.4 m is moving with a speed of 7 m/s perpendicular to a magnetic field of intensity 0.9 Wb/m2. The induced emf across the conductor is ?

Question 9 of 15

10. The current in self-inductance L = 40 Hm is to be increased uniformly form 1 A to 11 A in 4 milliseconds. The emf induced in inductor during the process is ?

Question 10 of 15

11. If N is the number of turns is a coil, the value of self-inductance varies as ?

Question 11 of 15

12. A 100 mH coil carries a current of 1 A. Energy stored in its magnetic field is ?

Question 12 of 15

13. An inductor may store energy in ?

Question 13 of 15

14. A magnetic field of 2 x 10-2 T acts at right angles to a coil of area 100 cm2, which 50 turns. The average emf induced in the coil is 0.1 V, when it is removed form the field in t sec. The value of t is ?

Question 14 of 15

15. Energy in a current carrying coil is stored in the form of

Question 15 of 15


 

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