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				| 1. | Resistance of tungsten wire at \[150{}^\circ C\] is \[133\,\Omega \]. Its resistance temperature coefficient is \[0.0045/{}^\circ C\]. The resistance of this wire at \[500{}^\circ C\] will be [DPMT 2004] | 
| A. | \[180\,\Omega \] | 
| B. | \[225\,\Omega \] | 
| C. | 0.025 cc | 
| D. | \[317\,\Omega \] | 
| Answer» D. \[317\,\Omega \] | |