CBSE Physics Electromagnetic Induction Test Online Questions Answers Mcqs
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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. mark reviewA 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 1 of 15

2. mark reviewThe 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 2 of 15

3. mark reviewA 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 3 of 15

4. mark reviewTwo 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 4 of 15

5. mark reviewTwo 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 5 of 15

6. mark reviewEnergy in a current carrying coil is stored in the form of

Question 6 of 15

7. mark reviewA varying current in a coil change form 10 A to zero in 0.5 s. If the average emf induced in the coil is 220 V, the self-inductance of the coil is ?

Question 7 of 15

8. mark reviewIn an inductor of self-inductance L  = 2 mH, current changes with time according to relation i = t2e-t. At what time emf is zero ?

Question 8 of 15

9. mark reviewAn inductor may store energy in ?

Question 9 of 15

10. mark reviewIf N is the number of turns is a coil, the value of self-inductance varies as ?

Question 10 of 15

11. mark reviewIn the circuit of figure, the bulb will become suddenly bright, if ?

Question 11 of 15

12. mark reviewAs a result of change in the magnetic flux linked to the closed loop shown in the figure, an emf V volt is induced in the loop. The work done (joules) in taking a charge q coulomb once along the loop is ?

Question 12 of 15

13. mark reviewA 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 13 of 15

14. mark reviewIf the number of turns per unit length of coil of solenoid is doubled, the self-inductance of the solenoid will ?

Question 14 of 15

15. mark reviewThe 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 15 of 15


 

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