Physics · 2021
JEE Main · 25 July 2021, Shift 1 · Q27
An electric bulb rated as 200 W at 100 V is used in a circuit having 200 V supply. The resistance ' R ' that must be put in series with the bulb so…
An electric bulb rated as $\displaystyle 200$ W at $\displaystyle 100$ V is used in a circuit having $\displaystyle 200$ V supply. The resistance '$\displaystyle \mathrm{R}$' that must be put in series with the bulb so that the bulb delivers the same power is \_\_\_\_ $\displaystyle \Omega$
Official answer
50
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