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The lines of forces due to earth's horiz...

The lines of forces due to earth's horizontal component of magnetic field are

A

parallel and straight

B

concentric circle

C

elliptical

D

curved lines

Text Solution

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The correct Answer is:
A
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MOTION-ELECTROMAGNETISM-Exercise
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  2. When a magnet is heated, its strength –

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  3. The lines of forces due to earth's horizontal component of magnetic fi...

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  4. A deflection magnetometer can be used for measuring –

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  5. A line joining places of zero declination is called

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  6. A hydrogen atom is a paramagnetic. A hydrogen molecule is –

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  7. The core of electromagnet is made of soft iron because a) the susc...

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  8. A permanent magnet –

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  9. The relative permeability of a substance X is slightly less than unity...

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  10. The variation of magnetic susceptibility (chi) with absolute temperatu...

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  11. A conducting loop is pulled with a constant velocity towards a region ...

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  12. A conducting loop of resistance R and radius r has its centre at the o...

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  13. A small conducting circular ring of area 2 mm2 is placed coplanerly wi...

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  14. A conducting square loop edge length a and resistance R is in a unifor...

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  15. A wire is in the form of a semicircle of radius r. One end is attached...

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  16. A circular coil of radius a and having N turns is placed at centre of ...

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  17. In the circuit shown in fig.. Time constant and steady state current w...

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  18. Through an induction coil of L = 0.2 H, an a.c. current of 2A is passe...

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  19. When the current in a coil charges from 2A to 4A in 0.05 s, emf of 8 v...

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  20. When the current in a coil charges from 2A to 4A in 0.05 s, emf of 8 v...

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