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Q. The current in an circuit increases to 98 of its final value 2.15 after the switch is closed.

(a) Calculate the current in the resistor.

(b) Calculate the rate at which heat is generated in the resistor.

(c) Assuming that all the heat generated by the resistor is absorbed by the solid substance, and that it takes 4 minutes to raise the temperature from 20to 80 degrees C, calculate the specific heat for the substance.

The current in an circuit increases to 98 of its final value 2.15 after the switch is closed.

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