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Materials and Components

Materials and Components
The number of protons in a copper atom are

9
11
2
29

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Materials and Components
The rule that resistivity of conductors can be separated into two parts viz. temperature independent and temperature dependent is known as

Matthiessen’s rule
Curie rule
Onne’s rule
Debye rule

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Materials and Components
A leakage capacitor can be represented by a capacitance C and resistance R in parallel C.

True
False

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Materials and Components
Which of the following are true for relative dielectric constant?1. It is dimensionless.2. It is equal to 1 for vacuum.3. It is equal to 1 for all substances.

2 and 3 only
1 and 3 only
1, 2 and 3
1 and 2 only

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Materials and Components
A vacant electronic state moves in the same direction as would a positive charge carrier.

True
False

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Materials and Components
For making a capacitor it is better to have a dielectric having

High permittivity
Permittivity which is neither high nor low
Low permittivity
Permittivity same as that of air

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