A small amount of phosphorus is added to silicon so that there are 2.5 × 10¹⁷ conduction electrons per cubic meter and 9.0 × 10¹⁴ holes per cubic meter. Let µ_e = 0.13 m²/V.s and µ_h = 0.05 m²/V.s. The resistivity in Ω - m will be

For making a capacitor it is better to have a dielectric having

A. High permittivity

B. Low permittivity

C. Permittivity same as that of air

D. Permittivity which is neither high nor low

Which inductor is linear?

A. Air cored

B. Cast iron cored

C. Sheet steel cored

D. Iron alloy cored

As the viscosity of a liquid increases, the relaxation time

A. Remains constant

B. Increases

C. Decreases

D. First decreases then increases

The materials which become polarized on the application of mechanical stress are called piezoelectric.

A. True

B. False