Electromagnetic Induction questions
610 published questions with worked solutions.
- A circular disc of radius 0.2 meter is placed in a uniform magnetic field of induction 1 ( Wb m ^2 ) in such a way that its axis...
- A long solenoid has 500 turns. When a current of 2 ampere is passed through it, the resulting magnetic flux linked with each turn...
- A rectangular, a square, a circular and an elliptical loop, all in the (x - y) plane, are moving out of a uniform magnetic field...
- A condenser of capacity C is charged to a potential difference of V_1. The plates of the condenser are then connected to an ideal...
- A coil of resistance 400 is placed in a magnetic field. If the magnetic flux (wb) linked with the coil varies with time t (sec)...
- A wire loop is rotated in a magnetic field. The frequency of change of direction of the induced e.m.f. is -
- A long solenoid has 1000 turns. When a current of 4A flows through it the magnetic flux linked with each turn of the solenoid is...
- The magnetic potential energy stored in a certain inductor is 25 mJ, when the current in the inductor is 60 mA. This inductor is...
- A 800 turn coil of effective area 0.05 m^2 is kept perpendicular to a magnetic field 5 10^ -5 T. When the plane of the coil is...
- An air cored coil has self inductance of 0.1 H. A soft iron core of relative permeability 1000 is introduced and the number of...
- The magnetic energy stored in an inductor of inductance 5 , carrying a current of 2 A is
- A circuit having a self inductance of 1 henry carries a current of 1 A. to prevent the sparking when the circuit is broken, a...
- Two coils are kept near each other. When no current passes through first coil and current in the 2^ nd coil increases at the rate...
- A rod of length ' ' is rotated with angular velocity ' ' about its one end, perpendicular to a magnetic field of induction 'B' ....
- In an a. c. generator, when the plane of the coil is perpendicular to the magnetic field
- The magnetic field of 2 10^ -2 T acts at right angles to a coil of all 100 cm^2 with 50 turns. The average e. m. f. induced in...
- A current of 0.5 A is passed through winding of a long solenoid have 400 turns. The magnetic flux linked with each turn is 3 10^...
- A circular coil of resistance R, area A, number turns 'N' is rotated about its vertical diameter with angular speed ' ' in...
- An air-cored solenoid with length 30 cm, area of cross-section 25 cm^2 and number of turns 500 carries a current of 2.5A. The...
- In LC parallel resonance circuit, choose the wrong statement.
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