A cold-water pipe and a hot-water pipe are both made of copper and are initially electrically isolated. In which one of the following arrangements will the galvanometer indicate a thermo-electric current?
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Question ID - 151393 | SaraNextGen Top Answer A cold-water pipe and a hot-water pipe are both made of copper and are initially electrically isolated. In which one of the following arrangements will the galvanometer indicate a thermo-electric current?
a)
b)
c)
d)
A cold-water pipe and a hot-water pipe are both made of copper and are initially electrically isolated. In which one of the following arrangements will the galvanometer indicate a thermo-electric current?
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a) |
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b) |
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c) |
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d) |
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1 Answer
127 votes
Answer Key / Explanation : (d) -
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(d) The thermo-couple works in a closed circuit. Since the two pipes are isolated, only In circuit pipe produce 2 opposing currents. In circuit |
are closed-circuits.
, the two constantans wires to the cold copper
, the copper-constantan junction is maintained across the cold pipe. A steady current can flow.127 votes
Answer Link
127