Electromagnetic Induction questions
610 published questions with worked solutions.
- The coil of an a.c. generator has 100 turns, each of cross-sectional area 2 m^2. It is rotating at constant angular speed 30...
- A conducting wire of length 2500 m is kept is east-west direction, at a height of _____ from the ground. If it falls freely on...
- Self-inductance of solenoid is
- Two coils of self-inductance 25 mH and 9 mH are placed together such that the effective flux in one coil is completely linked...
- A square loop ABCD is moving with constant velocity ' v ' in a uniform magnetic field ' B ' which is perpendicular to the plane...
- The magnetic potential energy stored in certain inductor is 64 10^ -3 J, when the current in the inductor is 80 mA. This inductor...
- A metal rod of length 'l' rotates about one of its ends in a plane perpendicular to a magnetic field of induction 'B'. if the...
- Two coils have a mutual inductance 5 10^ -3 H. The current changes in the first coil according to the equation I_1 = I_0 t where...
- The magnetic flux through a coil of resistance 'R' changes by an amount ' ' in time ' t'. The amount of induced current and...
- A 100 mH coil carries a current of 1A. Energy stored in the form of magnetic field is
- A hollow metal pipe is held vertically and bar magnet is dropped through it with its length along the axis of the pipe. The...
- A square loop of area 25 cm<sup>2</sup> has a resistance of 10 . This loop is placed in a uniform magnetic field of magnitude 40...
- An inductor coil of inductance L is divided into two parts and both parts are connected in parallel. The net inductance is
- Two coils have a mutual inductance 0.003 H. The current changes in the first coil according to equation I = I_0 wt, where I_0 =...
- The current in LR circuit if reduced to half. What will be the energy stored in it?
- Whenever a magnet is moved towards or away from a conducting coil, an e.m.f. is induced, the magnitude of which is independent of
- A transformer works on the principle of
- An average induced emf of 0.5 V appears in a coil when the current in it is changed from 10 A in one direction to 10 A in...
- Alternating current of peak value ( 2 ) A flows through the primary coil of a transformer The coefficient of mutual inductance...
- A coil having 'n' turns and resistance 'R' is connected with a galvanometer of resistance '2R' this combination is moved in time...
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