Electromagnetic Induction questions
610 published questions with worked solutions.
- The e. m. f. induced in a 1 milli henry inductor, in which the current changes from 5 A to 3 A in 10^ -3 second is
- Induction coil is an instrument based on the principle of
- The mutual inductance of a coil does not depend on
- The flux linked with a coil of self inductance 2 H, when there is a current of 5.8 A flowing through it is
- If the magnetic flux linked with a coil through which a current of x A is set up is y Wb, then the coefficient of self inductance...
- When a coil is rotated in a magnitude field, with steady speed, then
- Alternating current can be produced by
- Which one of the following can produce maximum induced e. m. f. ?
- An inductor may store energy in
- When a capacitor connected with coil is completely discharged, then
- Electrical oscillations of desired frequency can be obtained by
- The oscillations in L.C. circuit is produced due to
- If the current in the primary coil is reduced from 3 A to zero in 10 second, then the induced e. m. f. in the secondary coil is...
- A rectangular loop of area 0.4 m^2 is lying in a magnetic field of 4 10^ -3 tesla. If the plane of the loop is at right angles to...
- In an induction coil, the coefficient of mutual inductance is 4 henry. If a current of 5 ampere in the primary coil is cut-off in...
- The natural frequency of a L-C circuit is equal to
- A long solenoid has 1000 turns and its area of cross-section is 10^ -4 m^2 . If a magnetic induction of 10^ -2 T is produced in...
- A metal wire of area of cross-section 1.8 10^ -7 m^2 and specific resistance 9 10^ -6 -m is bent into a square loop and moved...
- A magnetic field of 2 10^ -2 T acts at right angles to a coil of area 100 cm^2 with 50 turns. The average e. m. f. induced in the...
- A coil of 10 turns and area 4 10^ -2 m^2 is placed in a uniform magnetic field of flux density 10^ -2 T. If it is removed...
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