Related Questions

The rule that resistivity of conductors can be separated into two parts viz. temperature independent and temperature dependent is known as
A Matthiessen’s rule
B Debye rule
C Curie rule
D Onne’s rule
By increasing impurity content in the metal alloy the residual resistivity always
A Decreases
B Increases
C Remains constant
D Becomes temperature independent
Thermisters which have a very high temperature co-efficient of resistivity belong to the class of solid called
A Dielectrics
B Insulators
C Semi conductors
D Conductors
Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. It is a/an
A Insulator
B Conductor
C Solid semi-conductor
D Liquid semi-conductor
তাপমাত্রা বৃদ্ধিতে অর্ধ-পরিবাহীর রোধ(Resistivity)-
A হ্রাস পায়
B বৃদ্ধি পায়
C অপরিবর্তিত থাকে
D কোনটিই নয়
Which of the following has low resistivity?
A Nichrome
B Glass
C Ebonite
D Diamond
On which of the following factors does the resistivity of a material depend ?
A Resistance of the conductor
B Area of the conductor section
C Length of the conductor
D All of the above
For heating element high resistivity material is chosen to
A Reduce the length of heating element
B Increase the life of the heating element
C Reduce the effect of oxidation
D Produce large amount of heat
What is the relationship between resistivity r and conductivity s?
A R = s2
B R = s
C R > s
D R = 1/s
Which of the following has highest resistivity?
A Mica
B Paraffin wax
C Air
D Mineral oil

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