Electromagnetic Induction questions
610 published questions with worked solutions.
- A coil of effective area 2 m^2 is rotated so as to cut a magnetic field of induction 7 10^ -5 Wb/m^2 . If the coil makes 100...
- The peak value of induced e. m. f. in a coil of 5000 turns each of area 50 sq. cm. rotating at 600 r. p. m. about an axis at...
- A coil of area 80 cm^2 and number of turns 50 is rotating about an axis perpendicular to magnetic field of 0.05 T at 2000...
- The number of turns in the coil of an A.C. generator is 5000 and the area of the coil is 0.25 m^2 . The coil is rotated at the...
- A coil of copper having 1000 turns is placed in a magnetic field B=4 10^ -3 T perpendicular to its plane. The cross-sectional...
- The general equation for the instantaneous e. m. f. of a generator (frequency 50 cycles/s), whose peak voltage is 200 V will be
- The r. m. s. value of induced voltage in a coil of 50 turns each of area 30 sq. cm. rotating at 1000 r. p. m. about an axis at...
- The frequency at which 9.0 mH inductor and 10 capacitor will have same reactance is
- A very small circular loop of radius a is initially (at t = 0) coplanar and concentric with a much larger fixed circular loop of...
- A square coil of side 25 cm having 1000 turns is rotated with a uniform speed in a magnetic field about an axis perpendicular to...
- If a horizontal straight conductor placed along north-south direction falls under gravity, then there is
- Lenz's law is consequence of the law of conservation of [CPMT 1990, JIPMER 1997, RPMT 1997, MP PET 1999, MP PMT 2000, RPET 2003,...
- A six pole generator with fixed field excitation developes an e.m.f. of 100 V when operating at 1500 r.p.m. At what speed must it...
- A coil having n turns and resistance R is connected with a galvanometer of resistance 4R . This combination is moved in time t...
- Two identical circular loops of metal wire are lying on a table without touching each other. Loop-A carries a current which...
- A straight conductor 0.1 m long moves in a uniform magnetic field 0.1 T. The velocity of the conductor is 15 m/s and is directed...
- A coil having effective area A, is held with its plane normal to a magnetic field of induction B. The magnetic induction is...
- A rod of 10 cm length is moving perpendicular to uniform magnetic field of intensity 5 10^ -4 Wb/m^2 . If the acceleration of the...
- A square coil 10^ -2 m^2 area is placed perpendicular to a uniform magnetic field of intensity 10^ 3 Wb/m^2 . The magnetic flux...
- A conducting coil having 500 turns cross-sectional area 0.15 m^2 . A magnetic field of strength 0.2 T linked perpendicular to...
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