B) 105
C) 10-4
D) 10-6
A) Area of x-section is reduced
C) Length is increased
D) Length is increased and x-sectional area is reduced
B) The resistance of wire is independent of the temperature for most of the materials
C) The resistance of a wire does not depend upon its material
D) None of the above
A) Temperanirc should remain constant
B) Current should be proportional to voltage
C) resistance must be wire wound type
D) all of the above
A) Larger than speed of light
B) almost equal to speed of light
C) Equal to speed of light
A) Nearly 3 x109 m/s
C) Independent of current strength
D) The same as propagation velocity of electric energy
A) A voltage source, a resistor and a switch
B) A voltage source and a conductor
C) A power source and a bulb
D) A voltage source, a conductor, an ammeter and a switch