Electromagnetic Induction questions
610 published questions with worked solutions.
- A coil of 'n' turns and area 'A' is suddenly removed from a magnetic field, a charge 'q' flows through the coil. If resistance of...
- A coil of n turns and resistance R is connected in series with resistance R 4 . The combination is moved for time t second...
- A 4 capacitor is charged to 10 V. The battery is then disconnected and a pure 10 mH coil is connected across the capacitor so...
- Two identical coils of inductance L joined in series are placed very close to each other such that the winding direction of one...
- When a current in the conducting coil is changed from 5 A in one direction to 5 A in opposite direction in 0.5 second, an average...
- 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...
- A coil of 'n' turns and resistance R is connected in series with a R resistance R 2 . The combination is moved for time 't'...
- Two coils P and Q are kept near each other. When no current flows through coil P and current increases in coil Q at the rate 10 ,...
- Two circuits A and B are connected to identical d.c. sources each of e.m.f. 10 volt. Self-inductances of circuits A and B are...
- A magnetic field 4 x 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...
- When magnetic flux changes from 6.5 x 10^ -2 Wb to 11 x 10^ -2 Wb and the change in current is 0.03 A, the coefficient of mutual...
- In an LC circuit angular frequency at resonance is . The new angular frequency when inductance is made four times and capacitance...
- Two inductors of 80 mH each are joined in parallel. The current passing through the combination is 2.1 A. The energy stored in...
- A coil having 'N' turns and resistance 'R' is connected to a galvanometer of resistance '6R' . The magnetic flux linked with this...
- This question has Statement 1 and Statement 2. Of the four choices given after the Statements, choose the one that best describes...
- The capacitor of an oscillatory circuit is enclosed in a container. When the container is evacuated, the resonance frequency of...
- A coil is suspended in a uniform magnetic field, with the plane of the coil parallel to the magnetic lines of force. When a...
- A circular loop of radius 0.3 cm lies parallel to a much bigger circular loop of radius 20 cm. The centre of the small loop is on...
- A coil of circular cross-section having 1000 turns and 4 cm^2 face area is placed with its axis parallel to a magnetic field...
- A rectangular wire loop of sides 8 cm and 3 cm with a small cut, is moving out of a region of uniform magnetic field of magnitude...
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