Home
Class 12
PHYSICS
carbon and an aluminimum wire are connec...

carbon and an aluminimum wire are connected in series.If the combination has resistance of `30Omega` at `0^(@)C`.The ratio of resistance of aluminimum to carbon at `0^(@)C` is `x` then `x=` (Here the resistance of combination does not change with temperature) Take `alpha_(c)=-0.5times10^(-3)``/^(@)c;alpha_(A)=4times10^(-3)``/^(@)C`

Promotional Banner

Similar Questions

Explore conceptually related problems

A carbon and an aluminimum wire are connected in series.If the combination has resistance of 27 ohm at 0^(@)C ,what is the resistance of each wire at 0^(@)C so that the resistance of the combination does not change with temperature ? [alpha_(C ) = -0.5 xx 10^(-3)(.^@C)^(-1) and alpha_(A) = 4 xx 10^(-3)(.^@C)^-1] .

A carbon and an aluminium wire are connected in series. If the combination has resistance of 30Omega at 30^@C , what is the resistance of each wire at 0^@C so that resistance of the combination does not change with temperature. (a_c=-0.5 times 10^-3//^@C,a_A=4 times 10^-3//^@C )

A carbon and an aluminium wire are connected in series . If the combination has equivalent resistance of 90 Omega at 0°C, the value of the resistance of each wire at 0°C so that the resistance of combination does not change with temperature is ( alpha_c=-0.5×10^(-3)°C^(-1) and alpha_Al=-4×10^(-3)°C^(-1) )

A copper coil has resistance of 20.0 Omega at 0^@C and a resistance of 26.4 Omega at 80^@C . Find the temperature coefficient of resistance of copper.

A wire has a resistance of 2.5Omega at 28^(@)C and a resistance of 2.9Omega at 100^(@)C . The temperature coefficient of resistivity of material of the wire is

A carbon filament has resistance of 120Omega at 0^(@)C what must be te resistance of a copper filament connected in series with resistance at all temperature (alpha_("carbon")=(-5xx10^(-4))/( ^(@)C),alpha_("copper")=(4xx10^(-3))/( ^(C))

A wire has a resistance of 3.1 Omega at 30°C and a resistance 4.5 Omega at 100°C. The temperature coefficient of resistance of the wire

The resistance of a conductor is 5Omega at 50^(@) C and 6Omega at 100^(@)C . The resistance at 0^(@)C is

The resistances of a wire at temperatures t^(@)C and 0^(@)C are releated by