Questions
The resistance of a wire of iron is 10 ohms and temp. coefficient of resistivity is
. At 20oC it carries 30 milliampere of current. Keeping constant potential difference between its ends, the temperature of the wire is raised to 120oC. The current in milliamperes that flows in the wire is
detailed solution
Correct option is A
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A piece of copper and the other of germanium are cooled from the room temperature to 80K, then which of the following would be correct statement?
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