357532 Two resistance coils connected in series have resistance of \({600 \Omega}\) and \({300 \Omega}\) at \({20^{\circ} {C}}\) and temperature co-efficient of resistances are \({0.001^{\circ} {C}^{-1}}\) and \({0.004^{\circ} {C}^{-1}}\) respectively. Find resistance of the combination at a temperature of \({50^{\circ} {C}}\)

357533 The resistance of the bulb filament is \({\rm{100}}\,{\rm{\Omega }}\) at a temperature of \({\rm{100}}\,^\circ C\). If its temperature coefficient of resistance be 0.005 per \(^\circ C\), its resistance will be \({\rm{200}}\,\Omega \) at a temperature

357534 Temperature dependence of resistivity of semi conductors, insulators and metals is singnificantly based on the following factors :
(i) Number of charge carriers can change with temperature \(T\).
(ii) Time interval between two successive collisions can depend on \(T\).
(iii) Length of material can be a function of \(T\).
(iv) Mass of carriers is a function of \(T\).

357535 Assertion :
The temperature coefficient of resistance is positive only for metals.
Reason :
On increasing the temperature the resistance of metals and alloys increases.

357532 Two resistance coils connected in series have resistance of \({600 \Omega}\) and \({300 \Omega}\) at \({20^{\circ} {C}}\) and temperature co-efficient of resistances are \({0.001^{\circ} {C}^{-1}}\) and \({0.004^{\circ} {C}^{-1}}\) respectively. Find resistance of the combination at a temperature of \({50^{\circ} {C}}\)

357533 The resistance of the bulb filament is \({\rm{100}}\,{\rm{\Omega }}\) at a temperature of \({\rm{100}}\,^\circ C\). If its temperature coefficient of resistance be 0.005 per \(^\circ C\), its resistance will be \({\rm{200}}\,\Omega \) at a temperature

357534 Temperature dependence of resistivity of semi conductors, insulators and metals is singnificantly based on the following factors :
(i) Number of charge carriers can change with temperature \(T\).
(ii) Time interval between two successive collisions can depend on \(T\).
(iii) Length of material can be a function of \(T\).
(iv) Mass of carriers is a function of \(T\).

357535 Assertion :
The temperature coefficient of resistance is positive only for metals.
Reason :
On increasing the temperature the resistance of metals and alloys increases.

357532 Two resistance coils connected in series have resistance of \({600 \Omega}\) and \({300 \Omega}\) at \({20^{\circ} {C}}\) and temperature co-efficient of resistances are \({0.001^{\circ} {C}^{-1}}\) and \({0.004^{\circ} {C}^{-1}}\) respectively. Find resistance of the combination at a temperature of \({50^{\circ} {C}}\)

357533 The resistance of the bulb filament is \({\rm{100}}\,{\rm{\Omega }}\) at a temperature of \({\rm{100}}\,^\circ C\). If its temperature coefficient of resistance be 0.005 per \(^\circ C\), its resistance will be \({\rm{200}}\,\Omega \) at a temperature

357534 Temperature dependence of resistivity of semi conductors, insulators and metals is singnificantly based on the following factors :
(i) Number of charge carriers can change with temperature \(T\).
(ii) Time interval between two successive collisions can depend on \(T\).
(iii) Length of material can be a function of \(T\).
(iv) Mass of carriers is a function of \(T\).

357535 Assertion :
The temperature coefficient of resistance is positive only for metals.
Reason :
On increasing the temperature the resistance of metals and alloys increases.

357532 Two resistance coils connected in series have resistance of \({600 \Omega}\) and \({300 \Omega}\) at \({20^{\circ} {C}}\) and temperature co-efficient of resistances are \({0.001^{\circ} {C}^{-1}}\) and \({0.004^{\circ} {C}^{-1}}\) respectively. Find resistance of the combination at a temperature of \({50^{\circ} {C}}\)

357533 The resistance of the bulb filament is \({\rm{100}}\,{\rm{\Omega }}\) at a temperature of \({\rm{100}}\,^\circ C\). If its temperature coefficient of resistance be 0.005 per \(^\circ C\), its resistance will be \({\rm{200}}\,\Omega \) at a temperature

357534 Temperature dependence of resistivity of semi conductors, insulators and metals is singnificantly based on the following factors :
(i) Number of charge carriers can change with temperature \(T\).
(ii) Time interval between two successive collisions can depend on \(T\).
(iii) Length of material can be a function of \(T\).
(iv) Mass of carriers is a function of \(T\).

357535 Assertion :
The temperature coefficient of resistance is positive only for metals.
Reason :
On increasing the temperature the resistance of metals and alloys increases.