MATERIALS AND COMPONENTS QUIZ

Insulators at room temperature

Good conductors at room temperature

Ferromagnetic at room temperature

Relatively poor conductors at room temperature

May increase or decrease with increase in light intensity

Increases with increase in light intensity

Decreases with increase in light intensity

Remains constant

True

False

dielectric strength and flash point

dielectric strength and viscosity

flash point and viscosity

viscosity and flash point

Any of the above

The number of electron hole pairs generated per second due to thermal motion is always more than the number of electron-hole pairs lost per second due to recombination

The number of electron-hole pairs generated per second due to thermal motion is always less than the number of electron-hole pairs lost per second due to recombination

The number of electrons-hole pairs generated per second due to thermal motion are equal to the number of electron-hole pairs lost per second due to recombination

Residual resistivity of Ni at low temperature will increase as Cu atoms act as defect centres

Resistivity of Ni will increase at all temperatures as Cu destroys the periodicity of Ni and acts as defects

Resistivity of Ni will decrease at all temperatures because Cu is a better conductor than Ni

Resistivity of Ni remains the same

9

29

2

11

True

False

None of these

Both AC and DC

AC

DC

False

True