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Thick and thin wires give rise to 3 diff...

Thick and thin wires give rise to 3 different squares x,y and z as shown in figure. The magnetic field at the centre of

A

x, y and z is zero

B

x and z is zero

C

y and z is zero

D

x only is zero

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The correct Answer is:
C
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AAKASH SERIES-APPENDICES ( REVISION EXERCISE )-REVISION EXERCISE (MOVING CHANGES & MEGNETISM)
  1. The magnetic induction at centre O in the following figure will be

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  2. A wire loop carrying current I is placed in the x-y plane as shown. Ma...

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  3. Thick and thin wires give rise to 3 different squares x,y and z as sho...

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  4. If the resistance of the upper half of a rigid loop is twice of that o...

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  5. An infinitely long conductor PQR is bent to form a right angle as show...

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  6. A straight conductor of length 32 cm carries a current of 30A. Magneti...

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  7. Two parallel long wires carry currents 18A and 3A. When the currents a...

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  8. Due to straight current carrying conductor, a null point occurred at p...

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  9. A long straight wire along the Z-axis carries a current I in the negat...

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  10. A wire carrying a current i is first bent in the form of a square of s...

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  11. Two long mutually perpendicular conductors carrying currents I1 and I2...

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  12. Two long parallel wires carrying currents 2.5 A and I (ampere) in the ...

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  13. A toroid has a core (non-ferromagnetic) of inner radius 25 cm and oute...

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  14. In the shown in the figure AC and BD are straight lines and CED and AF...

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  15. A solenoid of length 'l' has N turns of wire closely spaced, each turn...

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  16. A 3.0 cm wire carrying a current of 10 A is placed inside a solenoid p...

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  17. A closely wound solenoid of 800 turns and area of cross-section 2.5xx1...

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  18. If a solenoid of magnetic moment 0.6JT^(-1) is free to turn about th...

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  19. A solenoid of 1000 turns is wound uniform on a glass tube of 50cm long...

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  20. A solenoid of length 'l' has N turns of wire closely spaced, each turn...

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