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A charge of 2 xx 10^(-2) C moves at 30 ...

A charge of `2 xx 10^(-2) ` C moves at 30 revolutions per second in a circle of diameter 80 cm. The current linked with the circuit is .....

A

0.02 A

B

20 A

C

0.60 A

D

60 A

Text Solution

Verified by Experts

The correct Answer is:
C
0.60 A
`omega = 30 " rad /s "= 60 pi" rad /s"`
`I = (Q)/(T) = (Q omega)/(2 pi) " " [ because T = (2pi)/(omega) ] `
`therefore I = ( 2 xx 10^(-2) xx 60 pi)/(2 pi ) = 60 xx 10^(-2) A = 0.6 A `
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KUMAR PRAKASHAN-CURRENT ELECTRICITY-SECTION [D] MULTIPLE CHOICE QUESTIONS (MCQs) (MCQs FROM .DARPAN. BASED ON TEXTBOOK)
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  10. Charge passing through the cross-section of a conductor h given by Q =...

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  13. When an electric cell is in use, .... Relation holds good.

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  15. Lengths and cross-sectional areas of three copper wires are (l, A ), (...

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  17. ..... is Ohm 's law for good conductor

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  18. Ohmic resistance of conductor .....

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  19. SI unit of electrical conductivity is

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