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In Fig. There are two parallel long wire...

In Fig. There are two parallel long wires (placed in the plane of paper ) carrying currents 2I and I. Consider point A,C and D on the line perpendicular to both the wires and also in the plane of the paper. The distances are mentioned. Find (a) `vecB` at A,C and D (b) position of points on line ACD where `vecB` 0 is.

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It is clear from the above solution that B = 0 at point ‘D’.
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MOTION-MAGNETISM -EXERCISE-4 (LEVEL-II)
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  2. In a moving coil galvanometer, torque on the coil can be experessed as...

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  3. In a moving coil galvanometer, torque on the coil can be experessed as...

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  4. In a moving coil galvanometer, torque on the coil can be experessed as...

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  5. In a moving coil galvanometer, torque on the coil can be experessed as...

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  6. In a moving coil galvanometer, torque on the coil can be experessed as...

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  7. In a moving coil galvanometer, torque on the coil can be experessed as...

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  8. An infinite current carrying wire passes through point O and is perpen...

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  9. Some laws/processes are given in Column I. Match these with the physic...

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  10. A magnetic field vec(B) = B(0)hat(j) , exists in the region a ltxlt2a...

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  11. Two wires each carrying a steady current I are shown in four configur...

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  12. Statement -1 : The sensitvity of a moving coil galvanometer is increas...

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  13. A particle of mass mand charge q, moving with velocity v enters Region...

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  14. A steady current I goes through a wire loop PQR having shape of a righ...

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  15. Six point charges , each of the same magnitude q, are arranged in dif...

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  16. Electrical resistance of certain materials, known as superconductors, ...

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  17. Electrical resistance of certain materials, known as superconductors, ...

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  18. A thin flexible wire of length L is connected to two adjacent fixed po...

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  19. An electron and a proton are moving on straight parallel paths with sa...

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  20. Which of the field patterns given below is valid for electric field as...

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  21. A long insulated copper wire is closely wouind as a spiral of 'N' turn...

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