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If the force between the two parallel wi...

If the force between the two parallel wires having carrying current, is F, then what will be the force if the current is doubled?

A

`F/2`

B

4F

C

F

D

2F

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UNITED BOOK HOUSE-MODEL PAPER SET-16-EXERCISE
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  2. The internal resistance of a cell of emf E is r, and external resistan...

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  3. If the force between the two parallel wires having carrying current, i...

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  4. What is the condition for wattless current?

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  5. What is the velocity of E.M. wave in air medium-

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  6. The wavelength for a light in air is 7200 overset@A. What will be its ...

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  7. What is the momentum for a photon having frequency gamma ?

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  8. Which one of the following does not obey the particle nature of Pigut?

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  9. If the radius of first Bohr orbit of H is 0.53overset@A, then what wil...

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  10. For any trarisister alpha = 0.96, what is the value of its beta?—

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  11. Where the value of angle of Dip is Maximum?

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  12. When two conducting wires used to attract each other?

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  13. For any-AC wave the effective voltage is how much of the peak value?

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  14. In what condition a convex lens behave like a concave one? ,

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  15. In Boolean Algebra— (1011)2 + (1101)2 = [?]10 .

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  16. A silver wire has a resistance of of 2.1 Omega at 27..5^@C and a resis...

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  17. How to convert a galvanometer into a voltmeter?

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  18. A wire of length I is bent to form a circular, form of radius R. If I ...

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  19. The form of an electromagnetic wave is— B=10xx 10^-7sin{2xx 10^11t- 10...

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  20. An electron of H1^1atom is on the 4th excited state. How many spectrum...

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