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September 17, 2014

September 17, 2014

Posted by **prabhu** on Wednesday, February 1, 2012 at 12:10am.

- science -
**drwls**, Wednesday, February 1, 2012 at 2:30amFirst calculate how much the temperature rises. Neglect heat loss during the brief interval of resistive heating. The deposited heat energy is

Q = I^2*R*t = 50 Joules.

You have not said what your units of heat capacity (C) are, so I cannot tell you what the temperature rise is. The formula to use is:

(T2 - T1) = Q/(M*C)

The entropy change is the integral of dQ/T, which is

M*C*ln(T2/T1)

where T1 and T2 are initial and final absolute temperatures.

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