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Q. 48

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 792

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Short Answer

The circuit shown in FIGURE P28.48 is inside a diameter balloon filled with helium that is kept at a constant pressure of . How long will it take the balloon’s diameter to increase to 16 cm?

Time taken is

See the step by step solution

Step by Step Solution

Step 1: Given information

We have given,

Diameter of the balloon =

Pressure =

We have to find the time taken by the balloon to change its diameter to

Step 2: Simplify

The equivalent resistance of resistances in parallel as shown in the figure

Then the total resistance of the circuit will be

The total power dissipated by the circuit

then heat will be generated as

We know from the law of thermodynamics

Then,

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