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Value of dielectric constant of metal is...

Value of dielectric constant of metal is.......

A

infinite

B

zero

C

1

D

none of these

Text Solution

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The correct Answer is:
A
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Define dielectric constant.

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In the beginning the space between the plates of a parallel plate capacitor contains air and thereafter it is filled up with a medium of dielectric constant K. Then ......

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Value of dielectric strength of air is……… Vm^-1

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A parallel plate capacitor is to be designed using a dielectric of dielectric constant 5, so as to have a dielectric strength of 10^(9) Vm^(-1) . If the voltage rating of the capacitor is 12 kV, the minimum area of each plate required to have a capacitance of 80 pF is .........

KUMAR PRAKASHAN-ELECTRIC CHARGES AND FIELDS -SECTION D (MULTIPLE CHOICE QUESTIONS (MCQS)) (MCQS FROM .DARPAN. BASED ON TEXTBOOK) (ELECTROSTATIC ELECTRIC CHARGE AND FRICTIONAL ELECTRICAL CHARGE)
  1. Value of Coulombian constant in CGS unit is

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  2. If Coulomb's law is represented by F=kq(1)q(2) r^(n) , then n = ......

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  3. Coulomb's law is correct for......distance.

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  4. The graph which represents the correct relation between Coulomb force ...

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  5. Electric force on alpha-particle placed in electric Field of 20 xx 10^...

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  6. Value of dielectric constant of metal is.......

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  7. S.I. unit of permittivity (e0) ......

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  8. The value of permittivity of vaccum is 8.85 xx 10^(-12) C^(2)N^(-1) m^...

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  9. Two spheres carrying charge q are hanging from a same point of suspens...

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  10. If two opposite electric charges having same magnitude are 10 cm away ...

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  12. The position vectors of two point charges of 2 nC each are (2hati + 3h...

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  13. The force of repulsion between two like or point charges + 2C and + 6C...

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  18. An electron falls freely in electric field of 9.1 xx 10^3 NC^(-1), the...

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