A platinum wire is connected to a battery. (a) If the temperature increases, will the current in
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(a) If the temperature increases, will the current in the wire (1) increase, (2) remain the same, or (3) decrease? Why?
(b) An electrical resistance thermometer is made of platinum wire that has a resistance at 20oC. The wire is connected to a 1.5-V battery. When the thermometer is heated to 2020oC, by how much does the current change?
(c) By how much does the wire’s joule heating rate change?
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a The resistance of the wire will increase with temper...View the full answer
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