There are 'n' number of... | Current Electricity JEE Main

JEE MAIN 2025

04-04-2025 S2

Question

There are 'n' number of identical electric bulbs, each is designed to draw a power p independently from the mains supply. They are now joined in series across the mains supply. The total power drawn by the combination is :

Select the correct option:

$\frac{\mathrm{p}}{\mathrm{n}}$

$\frac{\mathrm{p}}{\mathrm{n}^2}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

$\begin{aligned} & R_s=R_1+R_2+R_3+\ldots \ldots \ldots+R_n \\ & \frac{V^2}{P_s}=\frac{V^2}{P}+\frac{V^2}{P}+\ldots \ldots+\frac{V^2}{P_n} \\ & P_s=\frac{P}{n}\end{aligned}$

Question Tags

JEE Main

Physics

Easy

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