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The physical quantity having the dimenti...

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

A

resistance

B

resistivity

C

electrical conductivity

D

electromotive force

Text Solution

Verified by Experts

The correct Answer is:
C

electrical conductivity
`sigma = (1)/(rho ) = (l)/(RA) = (Il)/(VA) = (IlC)/(VA) = (IlC)/(JA = (Il(It))/(JA) `
`therefore [sigma] = (I^(2)" lt")/(JA) " its dimention " = (A^(2) L^(1) T^(1))/(M^(1) L^(2) T^(-2) L^(2))`
`M^(-1) L^(-3) T^(3) A^(2)`
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KUMAR PRAKASHAN-CURRENT ELECTRICITY-SECTION [D] MULTIPLE CHOICE QUESTIONS (MCQs) (MCQs FROM .DARPAN. BASED ON TEXTBOOK)
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  2. Which is the dimensional formula for conductance from the given below ...

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

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  4. SI unit of electrical conductivity is

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

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

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

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

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

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  10. J = sigma E represents ........ .

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

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

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

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

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

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

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  17. A solenoid has 50 turns and radius 2 cm, diameter of wire is 2x 10^(-4...

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  18. Resistance or coil at 100^(@)C is 4.2 Omega. If temperature co-efficie...

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

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  20. Resistivity of ideal conductor and ideal insulator are rho(1) and rho...

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