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SI unit of electrical conductivity is...

SI unit of electrical conductivity is

A

`Omega m `

B

`Omega`

C

J

D

`ʊ m^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
`ʊ m^(-1)`
Accroding to definition `sigma = (1)/(rho)`
`therefore ` SI unit of `sigma = (1)/(Omega m) = (ʊ )/(m) = ʊ m^(-1) (because (1)/(Omega) = ʊ )`
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KUMAR PRAKASHAN-CURRENT ELECTRICITY-SECTION [D] MULTIPLE CHOICE QUESTIONS (MCQs) (MCQs FROM .DARPAN. BASED ON TEXTBOOK)
  1. ..... is Ohm 's law for good conductor

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  2. Ohmic resistance of conductor .....

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  3. SI unit of electrical conductivity is

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  4. For a block with dlmensions 1 cm xx 1 cm xx 100 cm havng resistivity...

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  5. Specific resistance of material of one wire is rho. Its volume is 3 m^...

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  6. Which is the dimensional formula for conductance from the given below ...

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  7. The physical quantity having the dimentiom, M^(-1) L^(-3) T^(3) A^(2) ...

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  8. SI unit of electrical conductivity is

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  9. Resistance of wire having diameter 2 mm and length 100 cm is 0.7 Omega...

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  10. Resistance of wire having radius r is R. If new wire of radius 2r, is ...

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  11. On applying an electric field of 15 xx 10^(-6) vm^(-1) across a cond...

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  12. The ratio of length of two wires of same mass arc made up of same mate...

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  13. Resistance of a wire is ROmega. It is stretched uniformly till Its len...

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  14. J = sigma E represents ........ .

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  15. On increasing the temperature of a conductor the product of its resist...

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  16. When the temperature of a conductor increase the ratio of its resistiv...

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  17. Two wires of equal lengths one of copper and other of manganin have th...

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  18. Two wires are made up of same material. Ratio of their masses is 1 : 2...

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  19. A resistive wire is stretched till its length is increased by 100%. Du...

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  20. A circle of 2.5 meter radius is made using a wire of uniform cross sec...

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