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A magnetic field is directed normally do...

A magnetic field is directed normally downwards through a metallic frame as shown in the figure . On increasing the magnetic field __

A

plate B will be positively chrged

B

plate A will be positively charged

C

none of the plates will be positively charged

D

all of the above

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The correct Answer is:
a
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MOTION-ELECTRO MAGNETIC INDUCTION-EXERCISE-1
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  2. The north pole of a magnet is brought near a coil. The induced current...

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  3. A magnetic field is directed normally downwards through a metallic fra...

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  4. Two coils P and Q are lying a little distance apart coaxially . If a c...

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  5. A system S consists of two coils A and B. The coil, A carries a steady...

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  6. Consider the situation shown in figure. If the current I in the long s...

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  7. A conducting ring is placed around the core of an electromagnet as sho...

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  8. A copper ring having a cut such as not to form a complete loop is held...

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  9. The north pole of a magnet is brought from a coil, then the direction ...

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  10. A metal sheet is placed in a variable magnetic field which is increasi...

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  11. A square loop PQRS is carried away from a current carrying long straig...

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  12. A thin sheet of conductor , when allowed to oscillate in a magnetic fi...

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  13. A wire of length 4 m placed normal to the plane magnetic field of (2 h...

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  14. A small conducting rod of length l, moves with a uniform velocity v in...

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  15. A rectangular loop of resistance R, and sides l and X, is pulled out o...

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  16. A circular coil of radius r is placed in a uniform magnetic field B. T...

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  17. A conductor ABOCD moves along its bisector with a velocity of 1 m//s t...

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  18. A square conducting loop of side L and resistance R is moving with a u...

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  19. An electric potential difference will be induced between the ends of t...

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  20. A 1.2 wide track is parallel to magnetic meridian . The verticle compo...

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