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What is conductivity ? Its value depend ...

What is conductivity ? Its value depend on which factors ? Write its unit and dimension.

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`rArr` Reciprocal of resistance is called conductance.
Conductance (G) = `(1)/(R"(resistance)")`
`rArr` Its SI unit is `(1)/(Omega)` or mho `(Omega)`. It is alos denoted as (S) and its dimensional formula is `M^(-1) L^(-2) T^(3) A^(2)`.
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KUMAR PRAKASHAN-CURRENT ELECTRICITY-SECTION [D] MULTIPLE CHOICE QUESTIONS (MCQs) (MCQs ASKED IN BOARD EXAM AND GUJCET)
  1. What is conductivity ? Its value depend on which factors ? Write its u...

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  2. A wire is bent in the form of circle of radius 2m. Resistance per unit...

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  3. The carbon resistor has three orange bands. The maximum value of resis...

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  4. Two wires of same material having lengths and radii in the ratio of 3 ...

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  5. Match the following two columns.

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  6. A voltmeter of a very high resistance is joined in the circuit as show...

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  7. A and B are two points on a uniform ring of radius r. The resistance o...

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  8. Two wires of equal length and equal diameter and having resisticities ...

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  9. What is the total current supplied by the battery to the circuit shown...

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  10. A student is given 4 identical batteries having emf 1.5 Veach and inte...

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  11. Given quantity of water is boiled by an electric heater in 5 min. If s...

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  12. In above circuit if current through 10 Omega resistor is 2.5 A, value ...

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  13. Brown, Red and Orange coloured bands on carbon resistor are followed b...

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  14. What is the current in the 40 resistor when switch S(1) is open and sw...

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

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  16. You are given 10 resistors each of resistance 2 Omega. First they are ...

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  17. The dimensional formula of mobility is ... .

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  18. The heat produced per unit time, on passing electric current through a...

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  19. A carbon resistor has three bands as Brown Black and Green in order. W...

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  20. In the network shown in the figure the equivalent resistance between p...

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  21. Shunt wire should be ...... .

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