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A wheel with 8 matallic spokes each 50 c...

A wheel with 8 matallic spokes each 50 cm long is rotated with a speed of` 120 rev//mi`n in a plane normal to horizontal component of earth's magnetic field. Earth's magnetic field at the phase is 0.4 G and angle of dip `60^(@)`. Calculate the emf induced between the axle and rim of the wheel. How is the emf affected if number of spokes is increased ?

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A wheel with 10 metallic spokes each 0.5 m long, is rotated with a speed of 120 rpm. Please of the wheel is normal to earth's magnetic field at that place. If the magnitude of the field is 0.40 G, what is the induced emf between the axle and rim of the wheel?

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MODERN PUBLICATION-ELECTROMAGNETIC INDUCTION-EXERCISE
  1. A metal disc of radius 200 cm is rotated at a constant angular speed o...

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  2. A metallic rod of length l is rotated at a constant angular speed omeg...

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  3. A wheel with 8 matallic spokes each 50 cm long is rotated with a speed...

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  4. If a 10 m long metallic bar moves in a direction at right angle to the...

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  5. A wire of length 0.1 m moves with a speed of 10 m s^-1 perpendicular t...

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  6. A conductor 2m long moves in a magnetic field of lfux density 0.5 xx 1...

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  7. A straight conductor 1 meter long moves a right angles to both, its le...

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  8. Calculate the e.m.f. induced between the ends of an axle 1.75 m long o...

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  9. An aircraft with a wingspan of 40 m flies with a speed of 1080 km/hr i...

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  10. A satellite with a 40 cm long copper wire on its bottom is revolving a...

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  11. A railway track running North South has two parallel rails 1.0m apart....

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  12. A magnetic flux of 5 microweber is linked with a coil when a current o...

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  13. The self inductance of an inductor having 100 turns is 20 mH. Calculat...

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  14. A coil has an inductance of 1.5 xx 10^-2 H. Calculate the e.m.f. induc...

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  15. The current passing trhoguh a 20 H inductor changes form 9 A to 8 A in...

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  16. An e.m.f. of 250 muV is induced in a coil, when current in it changes ...

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  17. A 5 henry inductor carries a steady current of 2 ampere. How can a 50 ...

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  18. A coil has a self inductance of 10 mH. What is the maximum magnitude o...

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  19. A long solenoid of 10 turns / cm has a small loop of area 1 sq. cm pla...

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  20. A coil has inductance of 5 henry and resistance 20 ohm. An e.m.f. of 1...

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