Temperature of the junction of conductors joined in series (steady state)

1. A.
   $\frac{\theta_{1}R_{2} + \theta_{2}R_{1}}{R_{1} + R_{2}}$
2. B.
   $\frac{\theta_{1}R_{2} - \theta_{2}R_{1}}{R_{2} - R_{1}}$
3. C.
   $\frac{\theta_{2}R_{2} - \theta_{1}R_{1}}{R_{2} - R_{1}}$
4. D.
   $\frac{\theta_{1}R_{1} + \theta_{2}R_{2}}{R_{1} + R_{2}}$

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1. A.
   $18^{\circ}C$
2. B.
   $14\ ^{\circ}C$
3. C.
   $45^{\circ}C$
4. D.
   $150^{\circ}C$

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1. A.
   $89^{\circ}C$ and $73^{\circ}C$ respectively
2. B.
   $80^{\circ}C$ and $60^{\circ}C$ respectively
3. C.
   $80^{\circ}C$ and $70^{\circ}C$ respectively
4. D.
   $60^{\circ}C$ and $45^{\circ}C$ respectively

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