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At 20°C, the carbon resistor in an electric circuit connected to a 4.2-V battery has a...

At 20°C, the carbon resistor in an electric circuit connected to a 4.2-V battery has a resistance of 2.3 ✕ 102 Ω. What is the current in the circuit when the temperature of the carbon rises to 83°C? Answer in mA.

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