Home
Class 12
PHYSICS
A carbon and an aluminium wire are conne...

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

A

`R_(o,c) =80/9Omega, R_(o,Al)=10/9Omega`

B

`R_(o,c) =80Omega, R_(o,Al)=10Omega`

C

`R_(o,c) =730/9Omega, R_(o,Al)=80/9Omega`

D

`R_(o,c) =10Omega, R_(o,Al)=80Omega`

Text Solution

AI Generated Solution

Promotional Banner

Similar Questions

Explore conceptually related problems

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 )

The equivalent resistance of two resistor connected in series is 6 Omega and their equivalent resistance is (4)/(3)Omega . What are the values of resistances ?

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 5Omega resistor is connected in series with a parallel combination of n resistors of 6Omega each. The equivalent resistance is 7Omega . Find n

Copper and carbon wires are connected in series and the combined resistor is kept at 0^(@)C . Assuming the combined resistance does not vary with temperature the ratio of the resistances of carbon and copper wires at 0^(@)C is (Temperature coefficient of resistivity of copper and carbon respectively are 4xx(10^(-3))/( ^(@)C) and -0.5xx(10^(-3))/( ^(@)C)

The temperature coefficient of resistance of tungsten is 4.5 xx 10^(-3) ""^(@)C^(-1) and that of germanium is - 5 xx 10^(-2)""^(@)C^(-1) . A tungsten wire of resistance 100 Omega is connected in series with a germanium wire of resistance R. The value of R for which the resistance of combination does not change with temperature is .

A coil of wire has a resistance of 25.00Omega at 20^@ C and a resistance of 25.17Omega at 150^@C . What is its temperauture cofficient of resistance?

The Total resistance when connected in series in 9 Omega and when connected in parallel is 2 Omega The value of two resistance are

A combination consists of three resistors in series. Four similar sets are connected in parallel. If the resistance of each resistor is 2 Omega , find the resistance of the combination.

Show how you would connect three resistors, each of 6 Omega , so that the combination has a resistance of (a) 9 Omega , (b) 4 Omega .