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Q. 41

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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

Two lightbulbs are wired in series, then the combination is connected to a supply. How much power is dissipated by each bulb?

Power dissipated by each bulb is

See the step by step solution

Step by Step Solution

Step 1: Given information

We have given,

For one bulb the power dissipation is at

We have to find the power dissipated by the each bulb.

Step 2: Simplify

We know that Power dissipated by one bulb only without connected the other bulb in circuit is given by,

then total resistance in the circuit after connected both the bulb will be equal to the equivalent resistance,

Due to equivalent resistances in series then current flowing in the circuit will be after connecting both bulb,

Then power dissipated by one bulb in the circuit will be

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