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If alpha -particle (""(2)He^4) is revolv...

If `alpha `-particle `(""_(2)He^4)` is revolving in a circular orbit of radius 3.14 A with speed of `8 xx 10^6 m/s`. Then the equivalent current is

A

`6. 4 xx 10^(-12) A `

B

`12.8 xx 10^(-4)A`

C

` 12 .8 10^(-16 )A`

D

`6.4 xx 10^(-9)A `

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-APPENDICES ( REVISION EXERCISE )-REVISION EXERCISE (CUTTENT ELECTRICITY )
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  2. In hydrogen discharge tube, it is observed that through a given cross ...

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  3. An electron of mass m,moves around the nucleus in a circular orbit of ...

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  5. A copper conductor of area of cross- section 40 mm^(2) on a side carri...

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  6. A wire carrying a current of 16A and its cross-sectional area 10^(-5 )...

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  7. In a wire of circular cross-section with radius 'r' free electrons tra...

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  8. An ionization chamber with parallel conducting plates as anode and cat...

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  9. A straight conductor of uniform cross section carries a time varying c...

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  10. A wire 50 cm long and 1 mm^(2) in cross-section carries a current of 4...

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  11. Two wires A and B made of same material and having their lengths in th...

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  14. Two wires of the same material and same length have radii 1 mm and 2 m...

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  15. Calculate the effective resistance between the points A and B in the c...

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  17. The variation of current and voltage in a conductor has been shown in ...

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  18. Two resistances of 400 Omega and 800 Omega are connected in series wit...

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  19. In the following circuit, determine the reading of ideal voltmeter (V)...

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