Ohm’s law is not applicable to__________?
Ohm’s law is not applicable to__________?
A. semi-conductors
B. D. C. circuits
C. small resistors
D. high currents
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A field of force can exist only between_____________?
A field of force can exist only between_____________?
A. two molecules
B. two ions
C. two atoms
D. two metal particlesThe resistivity of the conductor depends on
The resistivity of the conductor depends on
A. area of the conductor.
B. length of the conductor.
C. type of material.
D. none of these.The resistivity is a property of material, defined as the resistance between two opposite faces of a cube of a material of unit volume. That is why resistivity is only the unique property of material and it does not depend upon the dimension of any piece of material.
Ohm’s law is not applicable to____________?
Ohm’s law is not applicable to____________?
A. vacuum tubes
B. carbon resistors
C. high voltage circuits
D. circuits with low current densitiesIt becomes more difficult to remove_________________?
It becomes more difficult to remove_________________?
A. any electron from the orbit
B. first electron from the orbit
C. second electron from the orbit
D. third electron from the orbitWith rise in temperature the resistance of pure metals______________?
With rise in temperature the resistance of pure metals______________?
A. increases
B. decreases
C. first increases and then decreases
D. remains constantWhich one of the following does not have negative temperature co-efficient ____________?
Which one of the following does not have negative temperature co-efficient ____________?
A. Aluminium
B. Paper
C. Rubber
D. Mica