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Q. 48

Expert-verified
Found in: Page 792

### Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

Book edition 4th
Author(s) Randall D. Knight
Pages 1240 pages
ISBN 9780133942651

# 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 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,