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An inductor coil stores 32 J of magnetic...

An inductor coil stores 32 J of magnetic field energy and dissiopates energy as heat at the rate of 320 W when a current of 4 A is passed through it. Find the time constant of the circuit when this coil is joined across on ideal battery.

A

0.2 s

B

0.3 s

C

0.4 s

D

0.5 s

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The correct Answer is:
A
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NTA MOCK TESTS-NTA NEET SET 54-PHYSICS
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  2. The reading of the ammeter and voltmeters are (Both the instruments ar...

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  3. An inductor coil stores 32 J of magnetic field energy and dissiopates ...

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  4. A circular ring of radius R and uniform linear charge density +lamdaC/...

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  6. A charged particle moves through a magnetic field perpendicular to its...

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  7. A charged particle enters a uniform magnetic field with velocity vecto...

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  8. A conductor of length L is placed along the x - axis , with one of its...

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  9. A diatomic ideal gas undergoes a thermodynamic change according to the...

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  10. A cyclic process ABCA is shown in the V - T diagram . Process on the P...

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  11. Six moles of an ideal gas performs a cycle shown in figure. If the tem...

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  12. A metal ball immersed in water weighs w(1) at 0^(@)C and w(2) at 50^(@...

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  13. If there is no heat loss, the heat released by the condensation of x g...

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  14. Both strings shown in figure, are made of same material and have same ...

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  15. The motion of a Particle moving along then y- axis is represented as y...

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  16. A particle is projected with speed 20m s^(-1) at an angle 30^@ With h...

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  17. A particle is projected along the line of greatest slope up a rough pl...

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  18. A 1.0 kg ball drops vertically into a floor from a height of 25 cm . I...

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  19. An object comprises of a uniform ring of radius R and its uniform chor...

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  20. A man of mass 80 kg is riding on a small cart of mass 40 kg which is r...

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