Home
Class 12
PHYSICS
The temperature coefficient of resistanc...

The temperature coefficient of resistance of a wire is 0.00125 per `.^oC`. At 300K, its resistance is 1 `Omega`. The resistance of the wire will be 2 `Omega` at

A

1154 K

B

1100K

C

1400K

D

1127K

Text Solution

Verified by Experts

The correct Answer is:
B
b. `R_2 = R_1 (1+alphaDeltaT)`
`2 = 1(1+00125 xx DeltaT) or DeltaT = 1/(0.00125) = 800`
or `T_2 - T_1 = 800 or T_2 = 800 + T_1 = 800 + 300 = 1100K` .
Promotional Banner

Similar Questions

Explore conceptually related problems

The temperature coefficient of resistance of a wire is 0.00125 per ^@C . At 300K, its resistance is 1 ohm. This resistance of the wire will be 2 ohm at.

The temperature co-effcient of resistance of a wire is 0.00125^(@)C. At 500 K, its resistance is 1Omega. The resistance of the wire will be 2Omega at

Temperature coefficient of resistance of a wire at 0^(@)C is 0.00125^(@)C^(-1) . At 25^(@)C its resistance is 1 Omega . The resitance of the wire will be 1.2 Omega at

The temperature coefficient of a resistance wire is 0.00 12^(@)C^(-1) . At 300 K, its resistance is 1 Omega . At what temperature the resistance of the wire will be 2 Omega ?

The temperature co-efficient of resistance of a wire at 0^(@)C is 0.00125^(@)C^(-1) . At 25^(@)C its resistance is one ohm. The resistance of the wire will ne 1.2 ohm at .

The temperature coefficient of resistance of a wire is 0.00145^(@)C^(-1) . At 100^(@)C its resistance is 2Omega . At what temperature the resistance of the wire be 3Omega ?

The temperature coefficient of resistance for a wire is 0.00125^(@)C^(-1) . At 300 K its resistance is 1Omega . The temperature at which the resistance becomes 2Omega is