[" 7.The specific resistance of manganin is "50times10^(-8)chm times m],[" The resistance of a cube of length "50cm" will be "],[[" (a) "10^(-6)ohm," (b) "2.5times10^(-5)ohm,]]

The specific resistance of manganin is 50 xx 10^(-8) ohm xx m . The resistance of a cube of length 50 cm will be

The resistance of a 50 cm long wire is 10 Omega . The wire is stretched of uniform wire of length 100 cm. The resistance now will be

What length of the wire (specific resistance 48 xx 10^(-8)Omega-m ) is needed to make a resistance of 4.2Omega ?

What length of the wire of specific resistance 48 xx 10^(-8) Omegam is needed to make a resistance of 4.2 Omega (diameter of wire = 0.4 mm )

The resistance of a wire of 0.01 cm radius is 10 Omega . If the resistivity of the material of the wire is 50 xx 10^(-8) ohm meter, find the length of the wire.

A resistance of 2Omega is to be made from a copper wire (specific resistance 1.7xx10^(-8)Omegam ) using a wire of length 50 cm. The radius of the wire is

(a) Write down an expression for the resistance of a metallic wire in terms of the resistivity. (b) What will be the resistance of metal wire of length 2 metres and ares of cross-section 1.55 xx 10^(-6)m^(2) , if the resistivity of the metal be 2.8 xx 10^(-8) Omega m ?

If a wire is stretched to four times its length, then the specific resistance of the wire will

If a wire is stretched to four times its length, then the specific resistance of the wire will

What length of the wire of specific resistance 48 xx 10^- 8Omegam in needed to make a resistance of 4.2 Omega (diameter of wire = 0.4 mm)