Electromagnetic Induction questions
610 published questions with worked solutions.
- A circular ring of diameter 20 cm has a resistance of 0.01 . The charge that will flow through the ring, if it is turned from a...
- A coil of 1000 turns is wound on a book and this book is lying on the table. The vertical component of the earth's magnetic field...
- If a copper ring is moved quickly towards South pole of a powerful stationary bar magnet, then
- A rectangular coil of 300 turns has an average area of 25 cm 10 cm. The coil rotates with a speed of 50 cps in a uniform magnetic...
- The magnetic field of 2 10^ -2 T acts at right angles to a coil of area 100 cm^2 with 50 turns. The average emf induced in the...
- A cylindrical bar magnet is kept along the axis of a circular coil. The magnet is rotated about its axis such that North pole...
- The charge which will flow through a 200 galvanometer connected to a 400 circular coil of 1000 turns wound on a wooden stick 20...
- Lenz's law is statement of
- Two similar circular loops carry equal currents in the same direction. On moving coils further apart, the electric current will be
- The North pole of a bar magnet is moved towards a coil along the axis passing through the centre of the coil and perpendicular to...
- An aeroplane having a wing space of 35 m flies due North with the speed of 90 ms^ -1 . The potential difference between the tips...
- The wing span of an aeroplane is 36 m. If the plane is flying at 400 km h^ -1 , the emf induced between the wings tips is (Assume...
- When the current changes from +2 A to -2 A in 0.05 s, an emt of 8 V is induced in a coil. The coefficient of self-induction of...
- What is self-inductance of a coil which produces 5 V, when current in it changes from 3 A to 2 A in one millisecond?
- Two inductors each of inductance L are joined in parallel. Their equivalent inductance will be
- An air-cored coil has a self-inductance of 0.1 H. A soft iron core of relative permeability 1000 is introduced inside cored coil...
- A coil of wire of radius r has 600 turns and a self-inductance of 108 mH. The self-inductance of a coil with same radius and 500...
- A solenoid of inductance 2 H carries a current 1 A. What is the magnetic energy stored in a solenoid?
- A solenoid 3 m long is made by winding 2000 loops of wire on an iron rod whose cross-section is 1.5 cm^2. If the relative...
- The inductance of a coil is proportional to
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