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Magnetic flux in a closed circuit of res...

Magnetic flux in a closed circuit of resistance `20Omega` varies with time tin accordance with equation `phi`= `6t^2-5t +1`. Find the magnitude of induced current at t=0.25 sec.

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CHETANA PUBLICATION-Electromagnetic Induction-EXERCISE
  1. The magnetic flux through a closed circuit is phi= 15t-t+5 Weber. If t...

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  2. The magnetic flux through a spark coil of 1000 turn changes from 1.0 W...

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  3. Magnetic flux in a closed circuit of resistance 20Omega varies with ti...

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  4. A square coil having500 turnseach of side10cm is placed normal to the ...

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  5. The current in one coil increases from 0 mA to 500 mA in 0.1 ms. The ...

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  6. The current increases at the rate of 10A s^-1 in the coil of inductan...

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  7. Calculate the inductance of three inductors connected as shown:

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  8. Three inductors each of 6.0 H are connected as shown. Whatis theequiva...

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  9. A circular coil of 100 turns with a crosssectional area (A) of 1m^2is...

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  10. A conductor rod of length (l)is moving with velocity (v)in a direction...

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  11. Two inductor coils with inductances 10 mH and 20 mH are connected in s...

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  12. A current through a coil of self inductance 10 mH increases from 0 to ...

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  13. What is a energy required to build up a current of 1 A in an inductor ...

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  14. Lenz's law of consequence of the law of conservation of?

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  15. A cylindrical bar magnet is kept along the axis of a circular coil. If...

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  16. A magnet is brought towards a coil (i) speedily (ii) slowly, then the ...

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  17. A square coil having500 turnseach of side10cm is placed normal to the ...

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  18. A coil having an area 2m^2 is placed in a magnetic field which changes...

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  19. In a circuit with a coil of resistance 2 ohms, the magnetic flux chang...

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  20. A rectangular coil of 20 turns and area of cross section 25 sqcm has a...

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