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Standard XII

Physics

Reverse Bias

A copper stri...

Question

A copper strip AB and an iron strip AC are joined at A. The junction A is maintained at $0^{o} C$ and the free ends B and C are maintained at $100^{o} C$ . There is a potential difference between

the two ends of the copper strip

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the copper ends and the iron end at the junction

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the two ends of the iron strip

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the free ends B and C.

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Solution

The correct options are
A the two ends of the copper strip
B the copper ends and the iron end at the junction
C the free ends B and C.
D the two ends of the iron strip
Seebeck effect states that a voltage difference is produced whenever two dissimilar metals with a temperature difference are joined. Hence, all the given options are correct.

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Similar questions

Q. A copper strip AB and an iron strip AC are joined at A. The junction A is maintained at 0°C and the free ends B and C are maintained at 100°C. There is a potential difference between
(a) the two ends of the copper strip
(b) the copper end and the iron end at the junction
(c) the two ends of the iron strip
(d) the free ends B and C

Q. Two rods of same dimension, but made of different materials are joined end to end with their free ends being maintained at

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and

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l_{2} = 2 l_{1}, K_{1} = 2 K_{2}

and rods are thermally insulated from sides to prevent heat losses, then the temperature

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The middle point of conductor is earthed and its ends are maintained at a potential difference of 220 V . What is the potential at the two ends and at the mid point??

Q. A bar of copper of length

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[Take : K_{Cu} = 386 {Js}^{- 1} m^{- 1}^{\circ} C^{- 1} K_{steel} = 46 {Js}^{- 1} m^{- 1}^{\circ} C^{- 1}]

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A copper strip AB and an iron strip AC are joined at A. The junction A is maintained at 0oC and the free ends B and C are maintained at 100oC. There is a potential difference between

A copper strip AB and an iron strip AC are joined at A. The junction A is maintained at $0^{o} C$ and the free ends B and C are maintained at $100^{o} C$ . There is a potential difference between