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Q1. A 3.47V battery is connected in series with a resistor and an inductor. The series circuit has a time constant of 556μs, and the maximum current is 267mA. What is the value of inductance?

Q2. An insulated Thermos contains 110cm3 of hot coffee at 90 °C. You put a 12g ice cube at its melting point to cool the coffee. By how many degrees has the coffee cooled once the ice has melted and equilibrium is reached? Care for the coffee as though it were pure water and neglect energy exchanges with environment.

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  • Category:- Physics
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