Multiple Choice
Resistivity of lead is {{}}
A) 22.5 × 10-8 Ω m
B) 20.8 × 10-8 Ω m
C) 10 Ω m
D) 5 Ω m
Correct Answer:
Verified
Correct Answer:
Verified
Q9: In semiconductors upon increasing temperature, conductivity<br>A)decreases<br>B)increases<br>C)remains constant<br>D)haphazard
Q10: A filament lamp is<br>A)Ohmic<br>B)non-Ohmic<br>C)low resistive<br>D)non glowing
Q11: Resistance of a particular wire depends upon<br>A)size
Q12: If two waves are in phase and
Q13: Current and voltage are<br>A)directly related<br>B)inversely related<br>C)not related<br>D)gives
Q15: Resistance of metal is affected by<br>A)presence of
Q16: Constructive interference happens when two waves are<br>A)out
Q17: At constant temperature, resistance and cross-sectional area
Q18: At threshold voltage, resistance of diode<br>A)decreases<br>B)increases<br>C)remains constant<br>D)varies
Q19: Effect of diffraction is greatest if waves