Two resistors have resistances R01 and R02 at 0- C and temperature coefficients - 1 and -2- Find the value of - for their parallel combination-

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Standard X

Physics

Resistance

Two resistors...

Question

Two resistors have resistances $R_{01}$ and $R_{02}$ at $0^{\circ} C$ and temperature coefficients $\propto_{1}$ and $\propto_{2}$ . Find the value of $\propto$ for their parallel combination.

\frac{\propto_{1} \propto_{2}}{\propto_{1} + \propto_{2}}

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\propto_{1} + \propto_{2}

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\frac{R_{01} \propto_{1} + R_{02} \propto_{2}}{R_{01} + R_{02}}

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\frac{R_{01} \propto_{2} + R_{02} \propto_{1}}{R_{01} + R_{02}}

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Solution

The correct option is D $\frac{R_{01} \propto_{2} + R_{02} \propto_{1}}{R_{01} + R_{02}}$

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Two resistors have resistances R01 and R02 at 0∘C and temperature coefficients ∝1 and ∝2. Find the value of ∝ for their parallel combination.

The correct option is D R01∝2+R02∝1R01+R02

Two resistors have resistances $R_{01}$ and $R_{02}$ at $0^{\circ} C$ and temperature coefficients $\propto_{1}$ and $\propto_{2}$ . Find the value of $\propto$ for their parallel combination.

The correct option is D $\frac{R_{01} \propto_{2} + R_{02} \propto_{1}}{R_{01} + R_{02}}$